Haha yeah they got steamrolled indeed because two of our Commandos were Combat Medics with really good gear and they generally knew what they are doing so we basically weren't dying , their team was composed of force users only, juggernaut, marauder and the rest of them were lightning based sorcerers, jugg was really good and held his ground, but sorcs were dropping like flies.
Back on topic:
I think you have a point about lack of imagination, my first character back during the early access was that Commando and he is the only 50 i have, had a blast with him and now i really enjoy leveling my Smuggler, my force user characters are all in the 20-40 level range not because i don't like them, they are great and the stories are excellent but it annoys me sometimes that there are so bloody many of them, so they will wait until Smuggler hits 50.
But everyone has a different taste, i can't argue with that, my friend for example who tried f2p a few days ago, liked the game a lot and subbed, immediately made like 6 force user character saying "this is what SW is all about"!