This is not a very active forum so I don't check here too often, but I do have a recommendation for you. Trying to untank and do stuff is
very complicated. You may be interested in
Legends of Utrae which is also the MP map in single player with additional quests, hireable npc's, a few new monsters and some other cool things. You can download it from Siege Network:
SiegeNetwork.com
If the download from there doesn't work, you can download it from Herena Forge: (free registration required)
Herena Forge v2
I have it and am enjoying it alot.

Zonematch seems to be defunct, and yes, you could play the game just online but then you can't save quests, or anything like that and as it is a HUGE map that would make things more complicated.