You are forced to kill certain mobs. I don't really think it is quite 3/4ths in AV, CC maybe but its not like they are even proper trash when many of them are killed in one round of AOE.
Also skill I don't know... its still all about efficiency from the moment you enter. Even though people may blow through the bosses due to their skills at their jobs basic role, in the end the majority of that 17 minutes amounts to a race through a dungeon we've all done a hundred times with characters who all run at a set speed, there is no real skill or talent involved you can't run faster or punt lalafells with such precision that they land on the portals just perfectly. You can just run a precise route that is the fastest route from point A to B, with as little interruption as possible.
Efficiency is definitely a skill, it just isn't the skill I'd personally choose to continuously hold above all others when
playing a video game
for fun.
I'd rather our reaction, or more complex demands on a group's ability to work as a team be tested through endgame content.
Enjoyment> Efficiency, and first kills are always more meaningful than fastest farm kills. SE needs to get endgame back on track and provide us with a more enjoyable experience filled with memorable moments (great saves, last stands, caught off guard...backs against the wall, against all odds type moments) rather than monotony and stop watches. Which is all they have given us in dungeons so far unfortunately
