Supports.
Lots of problems, lots of ups and downs over their history. Currently we have a lackluster system that isn’t growing, with a tolerable but still insufficient method to acquire and advance most of them. It’s a system that could use a complete overhaul, even if that means completely removing and replacing it at some point.
So what have you got? We had a year where we got things like shards, and general consensus was that they addressed (or attempted to address) every major player concern except Supports. So I’d like to see something happen in that department.
For some more specific questions/thoughts:
It appears that characters released as Supports can’t become fully released characters. We once pried out of a dev that this wasn’t set in stone, but that no plans were made to address it. These days Wong seems like an obvious character choice, but he’s already a Support. Hulkling seems like an obvious character at some point, but again, already a Support. Many people were upset when the Black Order dropped all at once because, again, we thought we’d never see them as characters. (and personally, I still think some mentor characters like Professor X would make good Support options, if we could have a setup where characters can be both Playable and Supports).
Supports are hard to acquire and advance. Red ISO is useless if you can’t get supports, and there’s no way to advance supports outside of RNG (like how shards can help you inch a character along that you can’t pull covers for naturally).
We haven’t had new Supports in… a really long time. (I’m one of those spreadsheet players that collects and tracks game info, and even I can’t be bothered to check when, exactly, the last one was released)
Infinity Stones aren’t fairly available. They’re mostly only available to high-end players as essentially trophies (I’m totally on board with such players being able to acquire them that way, I’m NOT on board with them being unavailable to everyone else). But also, I know a player who played PVP SCL7 and slowly earned each Stone, one at a time. Has a full set of six. I’ve been playing longer, have a more well developed roster, but am completely locked out of that tier of PVP. I can’t even attempt the method he did to earn them. I’m not even sure the method was available when I was playing at that level. It kinda rubs the wrong way that I can’t even try to acquire something in the game because I’m too high level.
And then, there’s the whole “character expansion” aspect of Supports. Many were released alongside a new character, focused on that character, with special boosts only that character could use. When subpar characters are released, it feels like part of the character may have been “carved off” to use as a Support (instead of the the character being competitive with the rest, and then the Support being an additional boost). It kinda felt like some horrible attempt to monetize things, since people were having an easy enough time getting the characters, the horrible-to-acquire Supports would be something for the whales to chase. That kinda really rubbed people the wrong way. So add it to the list of things that need to be better about Supports.
Excited to see what some fresh eyes see for this aspect of the game, welcome to MPQ!