I love the fact that they decided to mirror the classes so much in SWTOR, not only does it help with balance it also adds the possibility of future good times with the lightside/darkside system. Think about it, say a year or two down the line people decide they want to switch sides they should fully and easily be able to.
Just add a series of quests on either side for each class that can turn them from Empire to Republic or vice versa. Make it a one time for that character only… as in once you switch that’s it. no jumping back and forth. I mean who is to say the Empire doesnt recruit some Smugglers as Agents or how the Jedi Order turned that Sith Marauder into a Jedi Sentinel. I know it might add some confusion to people with not the normal races being specific classes but it could be fun and add a whole new element to the game, or even add that spark of freshness a game sometimes needs around a year old.
Just an idea bouncing in my head. I know if it was an option i would try it on at least one character for the storyline value alone as I know Bioware would do a good job on it as so far I am in love with all the stories in this game. Something that could be free content or even something with an expansion, who knows. If done well enough I would pay for something like that added to the game.