i don't know what you'd call it, but i'd love to see a an archer class combined with some blademaster (and even sneaky) abilities.
just a few of the latter skills, like blade skills for pushing back monsters so you can pound em with arrows/bolts, and maybe also a "backstab" type skill where you can sneak up and just rape shit from behind.
That combined with archery skills might be too much and too overpowered, but hell, it'd be kick ass.
I'm thinking like an assassin, but not in the D2 sense. like a sneaky bastard who is lethal with weapons. throwing knives would be nice here too if they could make them not a joke.
About the infinite arrows, I think that they would come with a quiver that you need to equip for the second hand, and it'll be the quiver that enchants the arrows with something (either damage boosts or effects).
I like that idea, plus it will add to the variation of characters because some will like a damage boost (fire enchanted) and some will like slower targets (frost enchanted)