I agree to these points.
As most of the players are from SEA region, it doesn't make sense to follow EU timing.
Most people do not see Shen as a SEA server because Gameforge is advertised as a EU server, gotta have something to distinguish us from EU server.
Definitely need more advertising for SEA server, including SEA server time (maybe can find one timezone that is more generalized for SEA players)
IM, in my opinion is a rather important part of Tera, but because SEA server is unable to IM with other servers, it becomes redundant. Might need to find a way to improve on this? (EG: A bridge connection with the other servers? If that is possible)
Maybe you could try to include in PVP content instead of making it a pure PVE server (Because it's the only server there, might as well make all content accessible)