You forgot item and coin slots, those were the shit
Hall of Fame? rad, and a decent place to chill out.
The train? I miss the train, what I don't miss is the 1k fee you had to pay. Maybe have an option to just enter Aqua and an option to ride the train? Sounds good to me.
Back before 7.0 there were a few different functions for power attacks
The old music for Heath's was good (SunSpark is the name of the song,
https://www.youtube.com/watch?v=9GcachD66cg and its better than the new music added in 7.0)
Also before 7.0 the game didn't have the 3d-looking platforms/floor.
I remember back before the crafting update/the walljump/the dashing update, different stuff.
I remember when I'd gather money and just waste it on coin slots, lmao
Who can't forget item slots? That's 1 thing that should make a comeback (knowing robby it won't happen but who knows)
There's more I could point out, but I'll let you guys point that stuff out