I think as well that dtp would be a good choice - at least here where I live.
I'm in the official Drakensang forum - which will also be published by dtp - and I must say that they have quite a friendly athmosphere there.
I have met a few dtp members on a roleplaying games convention, the "FeenCon" in Bad Godesberg, part of Bonn, former capital of Germany, and had quite long chats with them - regarding the evelopment of Drakensang and the "Realms of Arcania" games.
They seem to actively support fan-sites and are generally quite positive - at least that's my very personal impression.
Personally, I would be glad if dtp and Larian worked together, but I must admit that I know next to nothing about how dtp behaves internationally.