Can we increase tank (warrior, paladin, gunbreaker, darkknight) survivability slightly in pvp while decreasing melee dps survivability slightly?

Feels a little unfair that some melee dps jobs have insane burst while being about as tanky if not more so than tanks. I understand that because of no role restrictions, every job needs to be more or less self-sufficient.

But removing damage modifiers for class roles and simply giving tanks more health doesn't really affect survivability as much as stuns, bubbles, damage reduction and escape actions - and some dps have stuns, bubbles, and escape actions in spades.

Which is fine... but can it be slightly reduced? Just a bit?

Just my two cents.