So I did some quick research and here's the weapons our Guardians have (excluding Joli):
Chakrams (Cyril)
Battle fans (Abby)
Claymore (Fionn)
Rapier (Ben)
Spear (Daisuke)
I didn't put Jak's and Naoto's either cuz you guys are in the middle of changing them. From what I can see is that all the Guardians have bladed weapons, two long-range (Spear and claymore, depending on how long the claymore is of course), one mid-range weapon (rapier) and two short range weapons that can be thrown. I think we need more variety so that should turn you guys (Rain & Hasayo) to something different than a bladed weapon. Though Hasayo, the rollerblades look pretty sweet.
I'm thinking of changing Abby's weapon again to something that enhances her strength since she's a tiny girl using martial arts, like brass knuckles, or a blunt weapon.