Yea there's some stuff that could use changing. Let is be known I joined the NRS scene for IGAU and its still my favorite fighter ever, well maybe next to GGXX. When I heard it was in development I bought MK9 and started practicing just to get used to an NRS engine, and that was a damn fine experience which lead to a kick ass community.
-zoning is inherently built into the franchise and people (dumb people, zoning rules) don't like it
---make the characters not start at full screen after a clash and the end of a life bar
---consider having some smaller stages and some larger ones
---roll starts up way faster and has a few more recovery frames, let it work on a read and get punished on a read, it just needs to get you away from full screen, not into d1 range, it seems inspired by kof but doesn't work as well and thus doesn't help balance playstyles as well
-delayed wakeup should cost meter or something
---it's very powerful and helps everyone while only hurting mixup and rushdown characters
-make sure pushblock can be done anytime you're in blockstun
---there's tons of footage from even the 2nd year of injustice 2 where top level players can't get the timing right. I do like the forward input though, gives better counter play to it.
-interactables should come in more shapes and sizes
---stage knowledge being important is so cool to me, and we're still the only community that truly has unique stages
---there should be more than 2 types of characters as well, instead of just power and gadget
---also please don't make them auto-escape from corners, inj2 it was a bit too hard of a read to stop the corner escapes
---if they are infinite use then hopefully they recharge a lot slower or aren't as damaging and/or taking up space
-most f3 and b3 should have less range
---a plus on block armored launcher should be more situational, and probably easier to whiff punish
-no more "flying" characters
---the floating stance characters always high profile a bunch of critical moves and it's just a shame
-airdashes, where they at?
---it helps make the movement better
---cuts down on repetitive zoning
---they're freaking superheroes, almost everyone can fly or speed or teleport
---Blue Beetle was a prime example of a character with effective and interesting movement but you could keep him out as well
-bring back the d2 d2 quick rise knockdown
---makes the person getting combo'd pay better attention
---leads to unique setups and more dynamic matches
-more costumes, and less gear, I think MK11 got it right
---it's a big deal in the comics when someone changes costumes and all us nerds are here for it, not just a slightly different helmet or gloves
---igau had a bunch of comics costumes and I personally was missing those for the inj2 characters
-personally I would like equipped moves to be all in competitive or to not exist
---go big or go home
That's it for now, but I'll probably have more later. Good call from
@MURK getting the discussion started early. If the cycle holds, these decisions are being made now, way before NRS announce the next game they make. If it's not Injustice 3 then hopefully they are still listening to the players about the pros and cons of injustice 2 and mk11 (which I think has mostly pros).