I had a thought the other day....
Wouldn't it be nice to have a holster for gunmen trees and a sheath for the knifer tree that could fit right into the book slot. I'm not sure what you could use for MAs and Hackers, but I'm sure some creative minds out there might have some thoughts.
Then I thought it would be nice to have something that would reduce the re-use timer for specific attacks whilst maybe reducing IS cost during use. Im not talking about adding defenses or resistances on to the item as I think we have plenty of items in game for this now.
You could have two types of holster: One that goes around the chest or 1 that goes around the waste, likewise for the sheaths.
I appreciate this would take some doing, but I just thought that it would be cool is all. Obviously an item like this would take some farming!