It would be really helpful if ANet can label each server as to what time zone it is.
Basically it would enable all the people in the different time zones to migrate to a specific server where they can find more people who play during their hours.
It would also help Guilds recruit the proper people. Say I have a 10 man guild and 5 of those are EST and 5 are on PST. Well it would be really hard to setup guild events because of the time difference.
I just think it would be nice to find a bunch of people who play PST or whichever time zone an individual is in.