I've played FFXI and WoW and I don't like agro information. There are people telling that most of actual MMOs have that information, but that shouldn't force something to be implemented. We're not lemmings...
IMHO this is not about "user friendly" environment; FOR ME it's more about making an easier way of exploring, taking away the fear/immersion factor. I dislike that.
This is just my opinion, as valuable as everyone else's one.

PD: Sorry for my written English. It's not my mother language...