Some of those races are mercilessly frustrating.
Lego Marvel Superheroes 1 and 2 make me want to scream at the screen. Part 1, at least you could win vehicle races with any vehicle, so long as you didn't crash. With part 2, you need to have unlocked a fast vehicle, and when Ghost Rider's motorcycle can't hack it, I'm done. Also, the flying races are punishment from above. No less.
Me, I could handle Spider-Man game races, though. Personally, I want the following out of the next game:
THE BLACK COSTUME. I don't care if it's a symbiote or a cloth suit. Just...give me the greatest Spider-Man suit ever. NOW.
The rest of my list:
1) Green Goblin
2) Venom
3) MILES in COSTUME!!
4) LESS MJ missions. Like...none would be better.
5) More JONAH. Listening to him rant while webslinging was one of the greatest things ever.
6) SURPRISE ME again! I liked the shock death at the end of the first game. Ock's arc...all of it. They changed it up just enough to keep us guessing, and they made me want Ock to fight through his problems...even though I knew what his fate would be.
7) ALL THE OLD SUITS. None of that crap where we have to re-earn them, either. Give us all the old suits out of the gate. Seriously.
8) New suits: BLACK SUIT, Raimi Black suit, Comic Iron Spider (I hate it, but others don't), Scarlet Spider (Kaine), Amazing Spider-Man 2 suit (Movie may not have been top notch, but the costume was great), and Ben Reilly Spider-Man suit (I hate this one also, but others don't).
9) NO STINKIN' SCREWBALL!! In fact, show where she dies a horrible death at the hand of a dozen cannibals in prison. Whatever it takes to ensure I never have to hear the word "photobomb" again.
Aside from that, just keep the mechanics of the game the same, and I'm happy. I've beaten this game sideways, and I still play it for fun. That's the mark of a great game for me.