Taking a break from the tl;dr analyses to post some quick impressions on characters people aren't talking about and some neat tidbits on other characters.
Wii Fit Trainer may have the best damage output in the game. I don't recall any other character being able to dish out this much damage in a few chunks outside of heavies. Except the difference is that WFT is fast and can recover.
Her NAir is disgusting, dishing out 14 damage and really messes up people trying to return to the ground. FAir looks to be the most useless aerial for her, but it's actually really good. 10 damage on sweet spot, hitbox on her back leg spikes, is a semi-sex kick. Her best offstage ledge gimping option by far. Her tilts hit hard: an absurd 12 damage on DTilt and really hard to punish from the air, FTilt hits both sides and can KO. UTilt is pretty meh though. Soccer balls do 9 damage. A .2 second charged Sun Salutation does 7 damage, just about as much as Pit's fully charged arrows. Max damage is 18, which is good, but it's the fact that low charged projectiles deal 10-12 damage on average. Hell, her
throws deal higher than average damage, between 9-11 damage and all of them putting the opponent in bad spots. Oh, and that soccer special? If your opponent hits her head and the ball, it does
23 damage. And can spike.
Yes, her Smash attacks are not really practical and are primarily used for punishes. Her KO potential, as a result, is pretty bad at low damage outside of Deep Breathing boosted aerials and tilts. Her reach outside of BAir (which is her most practical aerial), DTilt, FTilt and jab combo is pretty bad. But tools are there to be had, and with patient play, you can easily get opponents to ~140% after maybe eight or nine solid hits. Plus, her side-B and up-B have great recovery potential, and she has two usable spikes and a third powerful spike (although situational as an option against foes who try to jump up from a ledge).
WFT is a completely reactionary character, though, which is why I personally believe players haven't gotten a hold on how to properly use her. She has the tools to apply pressure from afar while having the sheer damage output to make opponents not want to approach her. Many people in the metagame at the moment are focusing heavily on the mid game, which is probably why WFT players are frustrated trying to get WFT to combat mid-game approaches with her own poor mid-game approach. She needs to be in the air or punishing players who try to stand around her. I'm going to keep experimenting with her to see what situations suit her best, but there's potential for WFT to be an excellent pocket character to pull out.
Fun fact break: did you know that PK Flash travels further when Ness is facing backwards? It's by a pretty good distance, too. This might not be new for some, but it is for me!
My next write-up will probably be on R.O.B., but is there a better frame trapper in this game than this robot? The varied speeds and active frames on his attacks, combined with the sheer absurdity of his top trapping game and multi-hit moves, make me believe that in a game that values frame advantage R.O.B. has the most threatening traps. He might also be one of the best answers to characters who rely on zoning, like DHD and Rosalina. Piercing projectiles and traps are legit.
On custom moves: I'm finding that Pit's second custom, Piercing Bow, actually has a use in match-ups against specific opponents that normally give Pit trouble, including Rosalina and DHD. Piercing projectiles kind of were laughed at when revealed as custom options and many thought they only had use in FFA's, but the ability to hit Rosalina behind a Luma, Villager behind a tree and DHD behind a gunman/through a clay disk is pretty invaluable. If you're struggling with zoning characters who hide behind dead body defenses, try this.