Thanks for your this feedback!
That's a very good point about the monitors, I'll definitely take a closer look at that.
WSDA and arrow keys will also be available soon, as we are also currently working on controller support and thus this type of movement will also be supported.
The skills are only linked to the weapon. All you have to do is find another weapon or craft it at the Blacksmith and equip it. Then the other skills are used automatically.