I'll also add in MM9, since you've played 6 through 8. You might also look at Arx Fatalis, which is also kind of fun (although rather linear in some ways).
You might also try something like a peasant game in the MM series, or a different boutique game in W&W... I'm sure there are other variations. You could also wait with the rest of us for Dungeon Lords (DW Bradley's next project).
