Well, Hellgate is now playable again in the US. It's been in beta in Korea for a while now. The beta for US access opened up in July. Open signups are available.
http://hellgate.t3fun.com/Home/Home.aspxDownloaded the client yesterday, and played a little last night. You can definitely see some Korean influence on the game. They've made a lot of skill changes, some of which were being tested on the Test Server before Flagship went belly-up. You can also gain access to The Stonehenge Chronicles and the 2nd content update The Abyss Chronicles, that was only available on the Test Server.
Anyway, thought I'd post this here, in case anyone had any interest in it.
And, just for fun, here's a cinematic from the original release: