Grand Fantasia have been suggested numerous times as game that vendetta should host and i totally agree with it.
M-clay work lke eden crystal so there goes the mainstream revenues for the server. It also have tons of costume that can be sell through mboxes.
Spanish PS - soo hard to play for english player. I have try it for 1 week and struggle to find anyone i can talk to,
Aeria server - probably gonna be shut down when they want to.
Unfortunately, Nostale just been release and i think they are busy handling that one. Plus, i have seen quite a few time the GM team state that they have no plan for anymore game (at the time being/now).
However, if many player support GF, they might consider it for their next game? ^^