Would like to see customizable keys available for the keyboard, the current key setup is not very comfortable, especially when jumping and lifting frequently.
Viewing post in Isle of Reveries Demo comments
For me personally:
Direction - WASD
Sword - K
Jump - L
Copy - J
Equip 1 - U
Equip 2 - I
Menu - E/F
Note - Q/R
The habits of players using keyboards are generally different, so it's best to have customized settings, but whatever the method, I personally don't think it's good to assign an action key on space when there are complex keys.