In rift alot of people have diffrent roles so they can be either a tank and a dps or dps and healing or .... .
Now in the curent bbdkp i don't seem to find anything where a person can select diffrent roles. You are either dps or heal or tank. But nowhere can you select multiple.
I believe it would be a better option to make people select diffrent roles (as playable) that can be played by them.
So in the char creation you would get something like