How can I improve my Character Card sets?

Ditch cannoneer, hero and dk then make this:

1. Pirate set
Xenon
AB
Mechanic

2. Random mixup
Kaiser
Marksman
Paladin

3. Resistance set
Demon Slayer (this is 4% status resist btw, not 5%)
Demon Avenger
Battlemage

Reason for ditching kaiser, hero and drk reason:

Defense is useless, hp doesnt matter much when new bosses have % hp attacks & cannon card is terrible unless you use it to finish pirate set.

That is if you're willing to level these chars to level 200, because with my experience mechanic & ab is horrible to level to 200 with medicore funding.

Also warrior set suck. It only takes your base hp into account along with adding the damage to your final hit, not multiplied by anything.

Example: You hit 100k per hit before the set bonus, while you have 100k base hp. This gives you 10k more dmg per hit, meaning if you were hitting 100k x 6 before you'd now be hitting 110k. Even if it shows up in your range, its fooling you.

Yep, I know how bad the warrior set is, however,
Increased buff duration is useless for a Hero as we aren't that buff heavy (and all my important buffs are managed by pets). And getting a Mechanic to 200 would be hell.

The -5% damage from a BaM doesn't really help when pretty much nothing can kill me except for 1hko skills, which are unaffected by it.

The pirate set however would be helpful, and my AB is actually strong enough to go for 200. I was considering swapping that in at some point, but I was unsure where to put it.