About weapons
I noticed that bombs, differently of swords and guns, are less "hybridizable". I mean... bombs aren't always a good pair for a weapon. When you pair sword and guns, you can use both more easily. That's the point: Bombs aren't easy to use on their own like swords and guns.
I suggest that OOO decrease a BIT bombs' charge time, fast swords' damage, slow swords' speed, 3+ shot guns' damage, 2 shot guns' speed (Obs.: See that I'm not trying to be too specific, because it would make a extensive text and I want to keep it simple). With this change, I suppose that bombs will be a bit more "hybridizable" and sword and guns are a bit less "hybridizable". So using each weapons on their own will be good, with or without class armors.
About defensive sets
I think you all know that defense has a curve on damage that it reduce: if you have too much defense, the additional defense will do less effect, practically no effect. I suggest that defensive sets modify this curve, letting these sets reduce more damage. Of course, just one piece will modify less this curve than a full set, so you can't exploit mixing defensive and offensive sets.
It may be a unique feature, but I found it necessary to defensive sets.
Well... It's all, folks. Any improvements on the suggestion or anything, comment below.
P.S.:If OOO change the weapons on the way I proposed, Plate sets would need buff, adding universal damage or ASI.
Graveyarding this one. Douple topic, sorry.