Imo, the last few people they added negated the need for some of the people.
Devon was added, and served as the mouthpiece. he did a fair job, at the time.
Taz was added, reportedly, due to the group needing a stronger mouthpiece. This, imo, made Devon irrelevant, outside of being Bully's brother.
They then added D'Lo, who - to be honest - blew Devon and Taz out of the water with his promos - therefore making Taz useless, aside from putting over the Aces at ringside, which I could do without.
Bully was introduced, as the President. He talks better than D'Lo.. plus... he wrestles. Making D'Lo useless in the group outside of run-ins, which can be handled by any member of the Aces.
Anderson is there because TNA wanted to use him for something, so a big group full of people would do. He'll change to face soon, do things, fade off to obscurity, come back, turn heel, wash repeat.
Ideally, I'd have Aces as:
Ray - WHC
Doc - TV Champ or Tag Champ
Knux - Tag Champ with ^
Wes Briscoe/Garrett - Tag Team/Wes could be X-Division
Ivelisse - Women
Anderson, D'lo, Taz, could all leave. Devon could as well.