Well, problem is: it's not anything like Origins. It's basically a third person action RPG with computer controlled companions doing their own stuff. You don't navigate the battlefield, you don't issue orders and you don't mark targets. You don't control somebody indirectly, on the opposite you have to directly control your char and even order him to hit every single blow (or just hold down the button...). So we don't talk about something like an isometric or even free camera tac game here. We talk about game/combat/movement mechanics along the lines of Witcher, Dark Souls or Assassin's Creed (just a lot worse with actually no skill at all involved)...if DAI is anything like Origins. Because first and foremost, for me it's a party-based tactical RPG.
You can switch to a tactical cam that works completely different (in the way of how classic party-based RPGs worked) but this cam is so terrible most people don't use it if you can avoid it.
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Well, since the mouse is one of your two control inputs and you are not allowed to bind actions to this device (and so basically 8 of the 11 buttons on this device are completely useless...) I'd say that this is a pretty big issue. It's like disabling half of the buttons of a console controller for no apparent reason...Edit: sorry i misread i didn't see you'd put mouse keys. Well personally I don't feel the need to remap the mouse keys, so....... yeah