So end game or not, we can play many different roles by changing up gear and skills. Not to mention all the variety of things we can change usually at anytime through our Alt Menus. . Basically I am trying to commend here the fact that we can be one role and with a few changes in the menu all of the sudden we are a completely different role. Other than what is concrete (morphs, magika, etc) we become versatile and very flexible.
So we can be a dedicated healer, DPS, range, etc etc all single target focused or otherwise. Then on the same character switch up a few things = completely different role
A generic example of what I mean is: Run through a dungeon as one specific role then switch up at the end fight.
We have choices for character development throughout the whole game but this concept takes away a lot of the fear of making regretful decisions.
Suit up for solo or become the ultimate support character. NICE
Other than race, class, Health, Magica, and Stamina.... What else would be more or less concrete?