Lots of great ideas here. I am not a fan of "crossover" items, for want of a better word. For example, I would not want to see light sabers or giant cartoon hammers or toy cars running about - breaks immersion and game world.
I think it would be cool to see some awesome Demon weapons, specific to their race/region - fire brands, skull head mace, life drain scythe, etc.
I'd for sure like to see spears and long range 2H weapons.
I am also a huge fan of very fast paced weapons, like daggers and such.
Great shield options is a must have IMO.
Animal claw wands, staves etc.
Bows, crossbow, maybe guns of a sort.
I'll give it more thought, but exciting options.