The Mouse/Keyboard controls look prefectly fine, I'm not sure what people are talking about. We've seen preview vids on PC, where we can clearly see how they use their mouse, and it uses the mouse properly (you can select things with the mouse, there's mouseover popups, and so on).
If you want to see actually BAD KB/M support, look at Mass Effect 2. No double clicking, no popups, to do anything in the menus you had to select something then move your mouse and click another button. THAT is what bad KB/M controls look like. DAI is nothing like that.
What actually seems to be a problem is that the menus are designed for consoles, which is to say that the item lists use massive fonts and there's limited amount of stuff shown on the screen at once, necessitating a lot of scrolling. A GUI fully designed for PC would cram a LOT more stuff on a single screen (for a good example of what I'm talking about, compare the vanilla Skyrim inventory to SkyUI).
But that has NOTHING to do with Keyboard/Mouse controls. The controls are fine, it's the menu screens that aren't "formatted" for PC.
There apparently are some problems with the Tactical Camera mode (it can't pass through solid objects), but that has nothing to do with Keyboard/Mouse.
Itkovian