Loads.
I most want to see unarmed weapons. Knuckledusters, gauntlets, claws, steampunk powerfists, boxing tape, anything unarmed would be welcome.
There 1 unarmed weapon in the entire game! That's not enough

I love unarmed fighiting. It's my favourite style on Fallout New Vegas and Fallout 3.
I would also like to see.
Spears
Scythes
Kamas
More Scymitars
Crossbows. I mean come on! No crossbows?!
Spearguns.
Throwing knives, axes, etc
Flails
Chain maces
Whips, if possible, but they would probabely be hard to implement.
Katanas
And any weapons I missed. The more weapons the better.