Finished the game earlier today. Ending was shit, but everything up to it was good stuff (although as said before, world was a bit too small, and more chapter-specific quests wouldn't have hurt). Also (spoilers)
As it is now, this is how I rate the Gothic games:
Gothic 2 (incl. its expansion) >>> Gothic 1 > Risen >> Gothic 3 (haven't tried the expansion for this)
I fucking hate games that give you some fuck-awesome armor (the end armor/weapons), but you have absolutely nothing to use it on except the end boss (I killed pretty much EVERYTHING on the island). At least extend the game for a little bit with harder enemies or whatever so I can use the shit.
As it is now, this is how I rate the Gothic games:
Gothic 2 (incl. its expansion) >>> Gothic 1 > Risen >> Gothic 3 (haven't tried the expansion for this)