Some sort of makeshift bow would be awesome. It could silently take down enemies and be good against low armor opponents but useless against armored ones.
And just like if you use the mod for NV, have a few types of makeshift bows (or parts mod them) and a prewar version that does higher dam.
The pre-war bow could be some kind of modern compound bow.
There could be a standard black version or a hunter version that fortifies your sneak skill if you aim while sneaking. There could also be arrow variants, one for unarmored foes and one for armored foes.