In an interview with Eurogamer, Lead Designer Nathaniel Chapman said, "Actually, this is one thing I would have liked to have spent more time on, and we are actually spending time on now. Basically, as long as PC gamers have a good way to control the combat, they will enjoy it."
In of Dungeon Siege III, we pointed out the problems with PC controls. Heck, I did so with a preview build on in late April.
Here's the question: If Obsidian wanted to spend more time working on the PC controls, why didn't they before Dungeon Siege III came out?