How will aggro be on mobs?

[Felis]

I can't say how the monster aggro in ARR (not because of the NDA, but because I was not in Alpha), but in 1.x there was variations. Sight aggro, sound aggro and sight+sound aggro. Don't go in front of a sight aggro monster, don't run past a sound aggro monster and don't go to near to a sight+sound aggro monster.

[Delsus]

I can't say how the monster aggro in ARR (not because of the NDA, but because I was not in Alpha), but in 1.x there was variations. Sight aggro, sound aggro and sight+sound aggro. Don't go in front of a sight aggro monster, don't run past a sound aggro monster and don't go to near to a sight+sound aggro monster.

But that's no fun

[Orophin]

Maybe I was just imagining it, but I thought enemies would aggro from a larger distance depending on how far below their level you were.

I know it did that in WoW but I don't remember that in 1.0.

I imagine they'll stick to their formula that has worked in both FFXI and FFXIV 1.0; have a combination of non-aggro, sight and sound aggro mobs. It'll be interesting to find out whether running out of sight or walking past sound detecting mobs stays in the new version or if they have something else planned.