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.
Of course bombs need to be made equal. They have the least support in the game, the worst specialist line and altogether the least weapons. Doesn't mean it's gonna happen. xD
All one can do is wish for a bomber update.