Got my 5 man group to 20 and tried the first GB instance. Tanking and threat just seems totally broken in this game, it's the same if not worse with warden than with the guardian. The first boss summons adds which despite me using goad and war cry, run off and kill the minstrel the second I cast a single heal. On the rare occasion I manage to grab the adds my dps target runs off and kills my hunters because I'm using to many aoe moves and haven't generated enough single target threat.

I really want to like this game, the world is fantasic, but the group mechanics seem terrible so far . What's the point of letting you into instances at that level if you haven't got the proper tools to complete them?

I'm going to try the guardian and run caster in the 5 man group instead of warden/minstrel and see if it helps.