One major weakness is that if someone has stickies and tac mask, you could be screwed. Might I suggest replacing at least one of the tacs with a smoke, and a weapon with an mms attached?
Well yeah in that case I would just switch to a regular class. But you'd be surprised how few people use tac mask, and I've had alot of stickies tossed at me, but they never hit since the enemy is already stunned/blind lol
Hmm, well the game only lets you take one smoke at a time, apparently.
Also, Tactician only allows you to take one extra tac in place of your lethal, so you shouldn't be able to have 2x two different tacticals, just one of one and two of the other.