I would love to see joystick support. Xbox joystick, generic ones, DS3, whatever. I would be more comfortable playing the game lying on the bed, not going to lie.
I know K/M would be still the way to go and for pvp I would obviously choose the best option, but I would love to see a joystick option for those casual moments like going into the field pve maps or gathering resources.
Shouldnt be too hard to do, and I know there are third parties solutions like Xmapper (that works good enough), but it would be awesome for an official way to do it.