Link is another character that is pretty good, but CQC of the top tiers really hurts him. As greninja and megaman, it isn't easy to get in particularly, but it isn't impossible... and when you do, it isn't great for him. Greninja gets all kinds of yomi after a fair/nair, and these can be landed from a short hop that negates his projectiles and grab. Of course, he can deny you with a sword, but empty hops and dashgrabs make quick work of that. Link is a good character, but his weaknesses just hurt when you have a bracket of Mario/Diddy/Bayonetta/Cloud/Shiek just mixing up on your shield really hard. Add in the fact that the top chars can either gimp him or do some sort of hard kill pressure since his shield grab is so slow... it hurts. This is just my amateur 2cents of course, but the slow jab AND slow grab means he just isn't as scary when you get in his face. Wind boomerang is a pretty cool tool and I see it used to great effect, and Link is kinda like ZSS light where if he is getting the grabs (which are amazingly good and only hindered by link's mobility) he is going to be doing a lot of damage (buffered uair can be a confirm on a decent chunk of the cast, and as always these combos tend to hit the characters you want them to hit by and large). Of course, like ZSS, intelligent shield usage and occasional spotdodges when you feel a grab is imminent will hurt him a lot. And really, range is only a decent trait when you have something like Diddy throwing a banana OOS at you each time he blocks your sad spacing attempts.
But survivability is only mediocre when he can be gimped. Like Ike, he can also put out some hard gimps with lots of tools, but when you have Cloud nair to compete with you start to realize why Cloud is usually just a better choice.
Zard.. im hopeful for zard buffs, he is pretty cool but has some dysfunctional moves and also kinda relies on his autocancel windows a lot. At stages with no Z depth he gets to sweetspot his ftilt always, which is funny. And he also destroys you if he grabs you by the tree. And rage fly is actually ridiculous with how early it kills.
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As someone who has trouble sticking with a main in any game, it is really really awesome to see that top level players are placing emphasis on their secondaries. Scatt is still trying to learn Mega vs Shiek, but has a secondary for the MU. This isn't a huge knock against Megaman, and really you dont' have to 'master' your secondary if it is only for a certain MU, it can be optimized against that character and your learning curve is lessened significantly. Then you have someone like Larry with some mains, ESAM hopefully getting back into top form with Pika/Corrin (OMG his corrin makes me hype for the character, even when im salty jealous about his fair), Void using a Fox/Shiek combo with great fluidity. He also picks his characters based on stage choice (or was at MSM) which is something I have considered as a good idea for a while, im super glad to see someone validate my decision because im never sure if it leaves me open for CP tricksies but none of my mains get BTFO by anyone now that needles aren't a full screen jab. Im rambling now, but I love where the meta is. Im kinda glad we are so unsure of where each character will stand in the coming months, because lots of people have a secondary in case of some nerfs for their main. You shouldn't be afraid of your main getting gutted because it hasn't really happened unless you had a crazily centralizing option anyways.
a game where you have to worry about a large chunk of the cast, even if you 'beat' them barely, is a really good one. Character loyalists and switchers are each rewarded in their own way, and its great. Im super hyped for the progress of the meta in the coming months.