I suppose, the PSX titles did not support the latter (Bloodborne did, though), but the rebindable controls would be good to have, so I could move the attack actions and camera controls to IJKL, rather than the arrow keys (also to reverse the x-axis for the camera).
I am aware of AutoKey, but would prefer to have the settings in-game.
Still, this demake is an impressive feat of game development and I would like to see more like it (but with rebindable controls).