This came to me during diner today randomly about the news post Comic To Video Game:Green Arrow I started thinking out stuff like the controls and how to make it slightly different gameplay wise from the Arkham Series.

For starters the gameplay suggestions about precision bar and rage bar I believe would make perfect sense, starting off the quickfire normal arrows (just like the quickfire batarangs) would hit say clothing and pin the enemy limbs against the nearest surface, and of course the angrier Ollie gets the arrows would start penetrating flesh then bone then kill shots and the more you fill the precision bar the more varying places you can aim at. Of course like TheMess1428 said don't have unlimited arrows, have him collecting used arrows and I was thinking maybe something like secret stashes, locker sized, of extra quivers of arrows or hiding places of trick arrows he hasn't used in a long time (boxing glove!!).

Plus instead of having the grapple arrow actually pull him distances, have it be more like a rope slide to fire from high to low places, leading to of course the rope slide kick or takedown and more xp, and him have either climb up the rope or just parkour the fire escape or from another building to go from low to high places. Still on the grapple arrow also having him being able to use it like the line launcher to be able to fire the arrow at an adjacent rooftop/window and slide/walk along it, leading to more varying types of takedowns.

Apart from maybe having Ollie also be able to use the arrows like in quickfire combo's in close/midrange combat, using his hand to grab it out the quiver and "stab" or throw it at the enemy. Plus using the bow as an added melee weapon in surprise close engagements that catch you by surprise/off guard when you have it drawn. That is all I can think of at the time being, maybe I might expand on this more. Till then tell what you think of these ideas and maybe suggest your own.