Yeah, that's exactly what I found myself doing! Usually I use it for the sprint capability more than anything else too. Getting to ion launchers or whatever the objective is. I usually don't even have a star card that modifies it active. Maybe I should just "let it happen", which is apparently how I got the two that I do have LOL. There's no real reward for completing all the Trooper milestones, like there is for completing all the Multiplayer milestones anyway.