Yes dps ops absolutely need the 30% AOE damage mitigation and at least one more big buff to defensive cooldowns. One possibility is to simply lower the cooldown on shield probe and evasion. Either a flat x seconds off or an x seconds off each time you take damage. If BW wants to maintain the idea that dps ops are supposed to use their heals rather than mitigation for staying power, then ops need ways to proc faster/cheaper/instant/free heals. Lethality already has one way to do that but more would be nice. Tie the heal procs to melee attacks and either give dps ops a second cc break or higher defense when cc'd so that they can't just be stunned and annihilated.
Added your signature to the defensive cooldowns section since Operative defensive abilities seems to be what you're supporting. Let me know if mistaken.
On a side note it seems like we're all mostly in agreement.
-Defensive cooldowns are poor.