[quote=@Kronshi]
[@Akayaofthemoon] I think I'm going to change my weapon. One person has a katana/longsword, another has dual-wielded shortswords. I understand that I got the weapon first but I'm willing to change for the sake of variety. But what weapon to use?
[/quote]

That is very nice of you. Thank you, for being willing to change it up a bit by giving up the weapon you wanted. 
Here are some suggestions I can think of:

Hammer
Axe
Bow
Gun


You can also do something that isn't quite a weapon...

Like Lapis controls water as her weapon
Peridot seems to be able to make or control technology from what it seems