I think SWTOR has done a lot in the way of creating a nice UI that doesn't necessarily need to be customized to the max the way WoW allows you to do. A few addons such as ones that would allow click-healing and better looking raid frames may be needed but as it stands, I don't see a need for anything additional.
This gave me a great perspective on what is going to be available. Keep up the good work, I look forward to updates.
Cataclysm Roster
Names link to armory.
Tanking
Mouthbreatha
Goldendeath
Caster/Ranged DPS
Gwensoulyn
Corpserun
Helzarow
Melee DPS
Nandos
Tamiller
Healing
Mindlock
Kareesan
Âtticus
Community Raiders
Sensa