It should be noted that a game can be an action RPG and have an intricate storyline, good character interaction, dialogue, and lots of customizability. That's what I think Obsidian is trying to do with PNJ.
A dungeon crawl with an intricate storyline, good character interaction, good dialogue, and lots of customizability?
Why not? Although I'm thinking of something like a mixture of Mark of Kri with Torment.