It totally depends on the content I'm playing. As these kinds of roles are only needed in dungeons and stuff like trials, the question is a bit strange. I'll try to explain it using a dungeon as an example.

In a dungeon there are three reasons you can fail.
1: the tank isn't properly tanking.
2: the healer isn't properly healing.
3: the dps is not good enough (many bosses are on a timer and have to be brought down in time or stuff gets akward)

So if any of these roles fail, the result is that the party fails. In the end the success of a team is the sum of the all elements contributing. If 3 people are lacking, the one proper player has to take over all those roles anyways.

So, if available, I would vote "other", cause the sum of all players participating has to be good enough.

EquinoxBlack wrote: »

Or in a pvp setting... you might have the best dps in the world so the healer might not be as important... but everyone who has ever played any mmo knows that in pvp, 1 extraordinarily exceptional healer can mean the difference between a win and a loss.

This is not true in any mmo I've played (and I've played most). A good healer means the difference between loss or not loss. A healer never wins or contribute to a win directly. His job is to prevent losing. As that is part of a win, they are important, but never decisive. Just as a dps is never decisive either cause a dead dps can't do dps at all.

This is specially true to ESO and it really is the sum of all in the team. there is no role that can or will lift the party up further then others potentially can or save the day.