My experience from my g8-10 trooper squad with zveers is that its situational, sure when there is lots of small fry to kill then you do great but the second you cannot kill anything directly your team stalls, it is built soly on getting the first kill to get the machine roling (aka tm gain, deathmark, prot back).
In pvp this means a strong defensive team will own you, a balanced team with equal gear will most likely win. On raids the team is useless on rancor, preforms badly on phase 1 on aat but great on 2 and 4 and decent on 3.
In tb its hard to tell but in phase 1 my trooper squad was the only one that made stag 4.
I run zveers, dt,shore (both are a must), snow and magma. I most likely will switch out magma for the colonel when i can.