I am thinking:
JKASiege.com EU
JKASiege.com NA
etc
With JA having fewer and fewer players, it's not really necessary anymore to have "cool" server names anymore. It might be worthwhile for people to see that there is still an active community out there. If I played some old game and found there was an active community with a .com website, I might be interested in checking it out, getting the maps, etc.
It sets it apart from all the other ordinary servers out there. Furthermore, people will never even see the "visit jkasiege.com" loading message if they can't connect to the server(because of password).