Season 1- I actually have no issues with the episodes themselves, because season 1 is REALLY good and follows the comics quite well. Frank Darabout was a brilliant show runner, but unfortunately he got fired. Why? Because his superiors wanted to save money and got greedy. So, they hired Glen Mazzara (or however you say his last name) in turn and thus not only got a more lackluster show runner, but also found a guy who was far more willing to have the budget be cut and have a lower production value in general.
Season 2- Stretched out the storyline far too long. Maggie, Herschel, and the other Greene characters are well developed at least, but everything else about the season is trash. Lori's painfully easy to dislike, and with Andrea... dang. Here's the deal: Andrea is my favorite character *in the comics*. She's a cool-headed, sharp-shooting beast who, while having a bad temper at times, is very loyal to her friends and allies and is extremely intelligent and well-grounded. And, in season 1, Andrea from the show is actually like her comic self! She doesn't take crap from anyone (her telling off Ed Peletier was AMAZING <3) and she's well-grounded. But, in season 2 they decide to turn her into a dead weight character where all her sharp shooting abilities from the comics go out the window and she has to train with Shane in order to get that sharp shooting ability. Couple the butchering of her character with how her character is written to be tragic but actually comes off as unlikable in this season is a shame. I feel bad for Laurie Holden, because she's a solid actress... but the material she gets just doesn't work. A lot of the characters stagnate in development here due to the painfully slow story-telling, aside from Shane and the Greenes.
Season 3- It's better than season 2, for sure. Andrea, while still being incompetent with a gun, gets better here and becomes a tragic anti-hero... which I kinda dig? Her trying to bring peace between the Governor camp and Rick's camp is an interesting storyline, and tbh I don't really mind it as much as others. I AM annoyed by how she's not as mentally strong as her comic counterpart, but the part I do really like is that she's actually taking charge of the situation at hand and trying to be active and driven. This is refreshing, because she goes back and forth between active and passive in season 2. The storytelling is better in this season, but we don't really see any payoff from the Governor storyline until season 4.
Season 4- Payoff with the governor story which is nice, and Michonne and Rick get much-needed development. Carl gets much more likable starting here as well. However, there's an overarching problem that becomes much more easily noticable in this season which I'll get to.
Season 5- My 2nd favorite season. The season is much more quickly paced than seasons 2-4 and the story takes a neat turn concerning the Alexandria plot. This is not as good as season 1 imo, because season 1 had storytelling down to a science and idk if it'll ever be topped, but concerning both Alexandria settlement and the Daryl and Beth story, this season was very refreshing.
Season 6- What a shame, we go back to slow story pacing and how one of the coolest characters in the comics, Heath, takes a backseat in this season. Denise also could've gotten more development, although I can't be too upset by this because one of the only things I don't like about the comics is that Denise dies a bit early in the comics as well. Either way, story pacing gets slow again and character development is hurt in turn aside from Negan, Dwight, and characters like Carl. Carl watching over his little sister Judith is a sweet story and helps Carl be a lot more likable, and I like how they continued that plot here.
Season 7- THIS is where I stopped watching, and this is where I'll talk about the biggest issue with the show: poor story pacing with payoffs in which the effect doesn't last long. With Negan pulling off a blindside and killing both Glen AND Abraham, we have this huge spike in shock... and then by the start of episode 2 of season 7, the story pacing goes back to being painfully slow. This is true in most seasons. Season 2: a very slow build up to Shane's death, then that single episode is very entertaining, but then the story goes back to a very slow build... then season 3 happens and Andrea dies with the Governor getting "exposed"... payoff is still there but the wait is a bit too long. The story pacing isn't consistent. Season 4: Governor death feels so right, but other than that the season is a very slow burn and other than the governor death, there isn't a lot of payoff. Season 6? This season is especially disappointing in payoff in that it's where Denise randomly dies and the group is captured by Negan. It happens too suddenly, especially with how slow season 6 is. Season 7: the best part of the season is in the first episode, and even in that first episode it takes forever to reach that climax because most of the episode is just Rick sitting there stunned by what happened, and the viewer is strung along without knowing who died until the 40 minute mark. Then the show goes back to being too slow in pacing. This isn't helped by how the storyline always goes like this: find shelter > engage enemy > flee to a new place. This is standard in zombie flicks, but that doesn't make it interesting. Other slow-burn shows like The Wire at least change up the story formula, and that keeps things fresh... on the other hand, the Walking Dead didn't do that in the seasons I watched, and I'm not sure if it changed up in future seasons. Seasons 9-present sound good, but I'm not gonna bother watching because I'm through with the show. The Walking Dead didn't keep things fresh, and payoffs didn't last long because the story would soft-reset each time and the results of said pay-offs and build-ups in the story would fade into the background quite quickly.
Seasons 1 and 5 were the peak, where the writers actually paced the seasons very nicely and it was entertaining all the way through. Not to mention that they weren't as formulaic in those seasons concerning the "shelter engage flee" story. Season 1 was just trying to find a place in the world and get used to the new landscape, and season 5 did a nice job of doing introspection into building up a society and how to run it properly. Seasons 1 and 5 were great, but the other seasons? Well season 4 was decent but it still had that critical flaw of being slow and the story being predictable and formulaic. I'm mixed on season 3, and I outright dislike seasons 2, 6, and 7. Not to mention characters like Daryl are overrated by the fanbase and he gets hoards of fangirls despite how his development stagnated through much of the pre-Neagan seasons after his brother's death. He gets a little development with Beth, but Beth outshined him in that storyline. Character development isn't balanced in general as well, and it's a shame. Rick, Maggie, and Carol are three of the only characters I look back on fondly from the show because their development was consistent. Glen was very likable as well in the early seasons, but he takes a backseat later on.
I just don't find the show good. It's in the lower tiers in my rankings and it's a shame because it started with a lot of promise, but today I find it overrated and even if the new seasons are good (and I've heard good things, and that's great), I'm just not interested anymore even though it seems like fans of the show are pleased by the positive changes. If you enjoy it, awesome. More power to ya, because I can't get back into the show. I feel disappointed too much by the up and down nature of the first 7 seasons.