It has been a while since I've run Volumes I-III. Yesterday, I started from scratch, ILR off but no banked XP, running the entire game. It is just as incredible as I remember it.
Volume 1, Chapters 1-10 (finished)
Final level plan, preER, is fighter20/BG2/Assassin8 with shield bash & impale. Started with no BG and no steadfast, and quickly learned my lesson. Shield Bash & Impale seem very strong, but are probably balanced by the long cooldown.
Overall, it is balanced, fun, and seems like it has not been changed since I ran it the first time.
Volume 2 (started)
I love the extra area.
The new mini-boss is awesome
the new reskin of the final boss is scary as hell.
Thanks Brian & staff!