I think the kit is good, doesn't seem OP but isn't too bad either cuase i.e. the AOE Basic. For the unique as it is, gainig Foresight and Evasion Up seems kinda unnecessary and if this should fit into an Imperial Trooper Squad there is something missing. I'd go with something like this:
'While Rocket Trooper is active, Imperial Trooper allies have +20 Speed. Whenever an enemy is defeated, Imperial Troper allies gain Foresight for 1 turn.'
For his Special I think the DOT is absolutely OK, but maybe swap it with something like Stagger? Troopers don't have any synergie with DOT and I think after getting hit with a rocket it's rather normal to stagger so it would logically fit in (and the Turn Meter train can keep rolling even longer).