"You can map some keys in game but not WASD for movement which is indeed utterly bonkers."
A game in which I can't use the arrow keys for movement is a game that for me is unplayable. Although there are workarounds, I resent having to use them.
I can wait until the price comes down to $2.99... which it will, eventually. Until then - and even if that "then" is in a few years, there's any number of other games for me to play, and more being released all the time.