My ideas:
1. Have the combat be like Injustice, but only with Spider-Man characters.
2. Have the ability to control all the villains and heroes and free roam.
3. Have a large rogues gallery to choose from (Doc Ock, Carnage, Electro, GG, Venom, HG, Tombstone, Kingpin, Shocker, Rhino, Hammerhead, etc.)
4. Be able to free roam with these villains
5. If a villain gets 5 hits in a row on Spider-Man, have parts of his costume rip, including his mask
6. Be able to create your own story in a way. (For Example, be able to control Doc Ock and go rob a bank or go hold someone hostage. Then, be able to control Spider-Man and have him come save the day)
7. If the villain wins while you are controlling them, have them choose whether to- A. Unmask Spider-Man B. Take Spider-Man hostage C. Continue to beat up Spider-Man D. Give Spider-Man to the police
8. Be able to free roam with all characters, and be able to free roam during battles.
9. Give us 4 alternate costumes for each character (NOT DLC, BUT UNLOCKABLE)
10. Have a campaign mode, too
11. Have organized side missions (For Example, have Spider-Man try to stop Lizard and Vermin battling)
If you dont understand some of my ideas, ask me and I will try to clarify!