What I really liked about .hack was the way fields and dungeons were made. If they could bring a system like that out in a MMO I would be very pleased but chances are it's too late to release a .hack MMO anyway due to the fact that (imo at least) the MMO market is pretty saturated with MMORPGs.

On a side note, I'd like a .hack on PSP due to the fact I could run a dungeon real quick and turn it off when I'm done. I think it would work well with portables.