More questions:
1) Will be possible add more unlockable things in AOTB?
Here are some ideas for unlock things:
a) Finishing the game several times.
b) Finishing the game with each character (even the hidden ones).
c) Completing special events.
d) Finishing the game in hard mode (higher modes apply too).
e) Finishing the game by different paths.
This feature will be good for add more replay to the game.
I love unlock things in the games.
2) Will be possible use any of those effects in AOTB:
a) Multi shadow effect (Purple or transparency). (ex: Johnny Cage's Shadow kick)
b) Sun shiny effect. (ex: Capcom vs. SNK Buda stage)
c) Water splash. (ex: KOF 95 River stage)
d) Filter the character colors in some stages, depending if the time's stage is night, day or afternoon. Also, an special filter if the character is inside of a volcano or a fire house.
e) Fog effect (customizable).
3) Will be possible customize the holes in AOTB?
4) Will be possible customize the entrance/exit of the characters in the stages?
Like:
a) Walking. (ex: Street of Rage)

Jumping. (ex: Final Fight Sodom part)
C) Falling (BOR).
Of course, if this can be done with the ingame cutscenes then it will be much better.
Well, that's all for now. Enjoy it. lol