I still don't understand why not a direct sequel.
To be honest the end of the game screamed sequel to me. Your friends promise they'll come save you/findyou/whatever, you're teleported to this random area and you pick up a mace amidst a huge war of demons, seriously it just sets up a whole new adventure right there but no... I just don't understand it, and I imagine I'll be bombarded with people with the opposite idea but really, you cannot look at that ending and not say there was at least a bit of a set up for one?
Still, I hope this spiritual successor will be just as good, and I am optimistic. Cannot wait for Wasteland 2, soon. ;P