Summary
Store different arrows in the same quiver, and cycle between them with trigger.
Core concept
I don’t see much point in using a quiver (except for the looks) as of right now, as they don’t seem to do anything different than just having the stack of arrows on you. In my opinion it’s actually better to not have a quiver, since you need two hands to get the loot pouch with arrows for easy collection when you are wearing a quiver.
Letting us have multiple different arrows in the same quiver, will let archers be better in more situations than just shooting enemies, without having to fill your inventory with different arrows, like exploding, or flaming arrows.
Quiver definitely needs an upgrade. Not only is it more inconvenient for the needing two hands to get the loot pouch. It also take up your hip slot rather than just arrows which can sit in any slot available and are almost just as easy to grab. The quiver is a minor upgrade due to the increased hit box, but just not worth it overall at the moment. Tbh I was confused its purpose when I first realized it couldn’t hold multiple types of arrows.