This is great especially for tanking reasons because you can tank "attention" (or draw aggro) very effectively. This is an effective strategy for a hard to reach LRM boat sitting in the backline, or an assault trying to push through snipers (can shoot back while remaining twisted.)
I believe this is the right direction for auto aim because improving damage obviously isn't.
An example for how I think it should work is simple: You track your target to engage missile lock (same as usual) with your tag active, and once missile lock is achieved you must continue holding down the tag button and maintain target info to maintain the missile lock.
I believe this is balanced because you give up target information on subsequent targets, an energy slot for tag, and points on the skill tree for relative skills like target retention.
Edited by Warboss_Jon, 21 October 2018 - 03:43 PM.