Please do not make group quest open world areas.

[Gunspec]

Plus there is flying so I fail to see how this is a bad thing.

The games the OP uses as example featured world content that required groups but gave no real rewards. Think of an entire zone that was fate or hunt difficulty, but trivial xp, gil, or loot. If Heavensward gets content like that (which I doubt it will), then the majority of players will be avoiding fights even more than they already do. Just because we can fly, doesn't mean they should scare us off the ground.

Edit: Now reading and looking more into what was ACTUALLY said and shown, I'm pretty sure people are blowing this up into something it isn't. It sounds like SOME enemies will be a bit beefier, and fighting more than one of those could be tough. We already have certain enemies, like molboros or those robots in garlean outposts, that are stronger than other stuff in the environment. We'll probably be seeing more of that, but not an entire map of elite mobs.