Fatalities are a good idea but I don't really think they should be too hard to pull off or drain a lot of Ki. I think that they should just be super awsome eye candy techniques but maybe a super finishing move could take up some Ki or something. For example, it could be a finishing move that you could perform on a guy who still had about half health. While in the advanced melee combo mode, you could press the correct directions to perform this, super finish, and that's only if the oppenent didn't block any of your attacks.
Goku: Dragon Fist
Vegeta: Attack that he used to try to kill Fat Buu when he was Majin Vegeta
Trunks: Cut into many pieces with sword and then blast the pieces to nothing
Krillen: Multiple Detructo Discs
Gohan: Multiple rage Masenko blasts
Cell: Suck dry with tail
Frieza: Buff up to 100% form and then punch straight through the stomach
Buu: Strecth body and consume opponent
Piccolo: Special Beam Cannon shoots through the enemy
What do think about that?Critz
Goku: Dragon Fist
Vegeta: Attack that he used to try to kill Fat Buu when he was Majin Vegeta
Trunks: Cut into many pieces with sword and then blast the pieces to nothing
Krillen: Multiple Detructo Discs
Gohan: Multiple rage Masenko blasts
Cell: Suck dry with tail
Frieza: Buff up to 100% form and then punch straight through the stomach
Buu: Strecth body and consume opponent
Piccolo: Special Beam Cannon shoots through the enemy
What do think about that?Critz