Attack range was next possible thing to be worked on, but ran out of time.
With enemies unable to move, giving the player Arbalesters can get tricky to balance, as without putting enemy Arbalesters everywhere it would allow the player to just sit back and safely pick off enemy units. They were taken off of the final map for this reason, but with enough time to properly craft maps (and add some extra mechanics to give units different properties), this could be alleviated.