I feel like it should just be an alternative function of Biolysis of Emergency Tactics. Press Emergency Tactics, changes Biolysis to Unstable Biolysis and applies in an AoE. The main reason for Bane is:

-Dungeon convenience.
-Field grinding convenience.

Against bosses, Bane is generally a non-factor, like Energy Siphon is just generally a button not pressed in Extreme/Savage/Unreal/Ultimate.

Making Deployment Tactics function as Bane, just like in PvP, is that Deployment Tactics is 90 sec, whereas the PvP version is much shorter.