I'm about to start toying with the Lt. Tac ability since honestly Cannon spread with Single cannons is a joke. I'm thinking a plasma torpedo and torpedo spread might get the job done.
Erase Tyken's from your memory. Seriously.
Unless you're running Tyken's 3 on a Sci is 5 Flow Caps. And even then, don't even think about it for more than a second - the drain is pathetic and it's broken so that it doesn't get buffed by the Flow Caps.
Dump Aceton Beam. Pick up RSP or Aux to SIF instead.
You're also pounding out 4 Teams... any more than 2 is a waste. 1 TacTeam and 1 EngTeam is going to be maxing out your CDs as it is. Drop ET 1 and go for EPtW, or drop ET 3 and go pick up the Aux to SIF/RSP that you don't have from leaving Aceton.
The first we heard of getting new PvP maps "soon" was in August of 2010. We're consistently told something will be coming with the "next" update. Absolutely nothing has come to PvP since launch.
I think it's finally time Cryptic stopped stringing us along, don't you?