The problem with DAI's controls may be due to the fact that it seems the developers are sitting on the action/tactical gameplay fence, on one hand they want to focus on the action elements on the other they want to bring back tactical gameplay from origins.
Tactical mode has click to move, loot, although abit buggy, the main problem is the tactical camera which is a pain during exploration. Also you can't activate tactical mode for mouse control in "safe" zones like Haven or Skyhold. Easiest solution is to just allow click to move/loot in action cam, best solution is to have that as well as fix the tactical camera.
Action mode's right mouse to mouse look works in previous DAs but in DAI where timing needs to be precise for many skills and talents - mouse look toggle and mouse button remapping becomes a necessity, at least for the blocking/parrying skills. Heck there needs to be "hold to block" as right now it still doesn't feel intuitive even with the mod (for warrior classes since their blocks are toggles, rogues are fine)
Either way my principle complaint (lack of movement control - such as walk/run) has been fixed by mods and already brought the game to an acceptable state for me personally (amazing how such a small thing can make a BIG difference)