Change them to instead of medium, be low. Instead of high, be medium. Instead of VH be high. Instead of Ultra be Very High. Instead of Max be Ultra. (God, that sounded as if I was encouraging drugs.) You get the drill. This would actually make people want a Virulisk/Salamander set instead of just grabbing skolvers. Oh and, don't do it for bomber sets. Most bombers except aren't the most powerful these days, anyway.
This has no effect on the Family-type damage bonuses including UVs.
Your suggestion would unbalance the way family bonuses and weapon bonuses stack together.
I'm gonna repeat what I say on every "buff defensive/nerf offensive armor thread".
All offensive weapon armors just need weaknesses for every resistance. Example: Snarbolax needs that freeze resist turned into a stun or curse weakness, Vog needs a freeze weakness added and Skolver needs a fire weakness added.
Bombastic needs fire weakness, Volcanic Demo needs freeze weakness, Mercurial Demo could have poison weakness
Deadshot first of all needs to be a shadow lair armor, Justifier fire or poison weakness, same for Nameless, Shadowsun stun.
Valkyrie upgrades are already balanced, and so is Mad Bomber.