What would the game be life if everythign was single target?

[Absurdity]

I think this is an exaggeration personally. Judging from Offensive Mastery Squadrons, which rarely aoe but can shred through Aurum Vale or Sohm Ahl in 12 minutes, a decent group could clear a dungeon in reasonable time, maybe losing 5-10 minutes or so. 40 minute groups with players who don't aoe are usually because those players are just awful in general and not putting out single target burst either.

Keep in mind that Squadrons with fully maxed Offensive Mastery deal significantly more damage than players would do at lower levels and have access to skills that players do not.

[Jojoya]

Keep in mind that Squadrons with fully maxed Offensive Mastery deal significantly more damage than players would do at lower levels and have access to skills that players do not.

They're also able to ignore most AoEs as they take greatly reduced damage. They don't lose DPS trying to dodge mechanics unless the player instructs them to withdraw.

On the other hand, they don't really think for themselves. They target the first enemy to hit their enmity table even if that's not the best one to kill first - and that's not always the same enemy for all of them. They lack the coordination an alert group of players would have.

I doubt dungeons would take as long as people fear, especially since dungeons would get redesigned around the lack of AoE. If someone wants the challenge of clearing dungeons in their current design without AoE, they can always form a party with like-minded players and remove all their AoE actions from their hotbars and keybinds to see what the result would be