I'm really happy with the game, although I started to get a little worried as I closed in on the end of Act I... the opening was very somber, and I missed some of the whimsy and humor of previous Black Isle / Bioware titles. It picked up as I gained more NPCs (more party banter) and the city allows for lots of questing opportunity.
The endurance system is great. Some of the new class types (chanter, in particular) are quite interesting to play.
Definitely met my expectations, including the stronghold and endless dungeon.