This is a (hopefully) reasonably accurate list of the features DBQ will have in its releases.
Team Deathmatch Mode
Summon The Dragon Mode
Tenkaichi Boudokai Mode
Character Creation System Including - Mixing and matching of model parts (depending on race), Mixing and matching of skins (depending on race and character).
10-15 Maps (I think?)
A Melee System (resembling Oni's) Including - Arial Raves, Physical Blocking, Ki Shield Blocking, Batting Away of Ki Attacks, Stuns.
Ki Attacks Including - Normal Ki Bolts, Beams, Huge balls (Genki Dama, Death Ball etc), Homing Ki Balls.
Beams that Bend
Permenant Landscape Damage
6 Races - Human, Saiyan, Namek, Icer, Alien, Android, each with their own advantages and disadvantages.
Kaio Ken - Set in DBQ as a Human Ability
Super Saiyan 1, 2 and 3 - The Saiyan Races ability. All saiyans can transform to SSJ 1, 2 and 3.
Ability to Hide Your Power Level
Ability to Power Up
Many Special Effects Including - Cool looking auras and ki trails, Screaming while powering up, Lightning on high level auras, Bits of ground floating etc when powering up.
Items Including - Scouters, Senzu Beans, Armor.
Ability to Charge Ki Attacks for up to 10 Seconds
Ki Boost System
Cool Music - There was also talk of a system whereby you can play custom music while you play.
Piccolo's Stretchy Arm Attack
Fusion (with a twist) - It is unknown what this 'twist' will be at this time.