My biggest gripes with the game is that with such an awesome presentation, things get repetitive. Characters should have more intros and outros (yes I know these change with a couple of costumes.. but it's very few). More win quotes… etc..... I had also wished each character would have had at least two super moves…. and maybe even finisher moves. Fatalities with DC games are always a tricky subject... but after playing injustice.. they do a somewhat different take on violence.
Ambiguousness
In Joker's victory sequence... he douses his fallen oppenent with gasoline and then lights them on fire... the body isn't shown... but it's implied by Joker's intent gaze on the fire that loser is being burned alive.
In Ares victory sequence... he summons a bunch of swords and sends them all at the camera... supposedly impaling the loser.
So my idea would have been to have fatalities/finishers/beatdowns just not be as gory. Like Black Adam delivering a finishing lightning punch... or Superman using a continuous blast of heat vision.