I played a fair bit when it first came out, then lost interest. About a year and a half ago, I sold off everything, emailed the money to a new toon and erased all the old ones. Then I moved and lost interest since I had crap internet for over 6 months. Now I'm playing catch up with my lev 40 Jedi and lev 26 trooper. I really like how the housing system works and have been discovering new stuff all the time. Datacron unlocks work across multiple toons so now I won't have to have all my toons do that long ass balloon ride on Tantooine. Really like that the planetary commendations are general instead of planet specific. I always ended up with a shitload of low level commendations I didn't need because I was out leveled for the stuff they bought. Still trying to figure out the new crafting system and all the weird loot like droid parts you trade in somewhere. Mixed feelings on each companion being able to fill all support roles and really don't like the level synch and companion gear stat changes. I put a lot of work into crafting and buying good mods for my companions and now they're all worthless.
Space battles are good for extra xp and making some money, but what's the point of starfighter battles?