Yeah, Awesome thread
For the "subs" -- I looked at my 400 dTon SDB's with thier EMS Jammer, Decoys, EMM -- and I figured that thier whole outlook of hiding in GG's and lying in ambush posture -- gazing at thier PEMS to see who is out there .. lol
or they can float amongst the fleet -- and just use PEMS, minimal power usage, power down weapons and lessen the engines -- to look like a merchant. Or -- glide along the planets to throw off others sensors -- or glide thru asteroids to scatter the sensor signals ..
there are several things a good SDB crew could do to be a fleet "sub", especially since SDB's are very heavily armored...and with 12 missile launchers -- it could really give a suprised opponent a rude awakening .. lol