I played the stress-test all weekend. I'll probably buy the game and play it for a couple months, but not sure I'll stick around after that. No idea what end-game content is going to actually feel like.
I leveled a Sith Inquisitor up to the point I got a starship. Did not like the starting area for it that much, but the second area was not bad. LIGHTNING EVERYWERE is the playstyle. Went the Sorcerer route. Hated the first companion I got. Starship combat is on-rails (so far, at least) but looks very good. The ship interiors are large, not sure how much we can customize them. If at all. Might play this class For Serious in December. Female voice actor was very good.
Tried out a Smuggler/Gunslinger next. Discovered I hated the second area more than the first area, which was not that great either. I enjoyed the option to flirt with every attractive alien in the galaxy. First companion is alright. The cover system works alright, but it feels a little odd until you get used to it (and then it's still a bit odd). Voice reminded me of a cross between Mal (Firefly) and Han.
Tried Jedi Knight until level 11 or so, really didn't like the playstyle once I went Sentinel (dual-wielding lightsabers). Just wasn't for me. First companion is great. Lost interest kind of fast with it. Voice wasn't bad (male).
Trooper made it to 12ish before I packed it in for the night. First companion is alright. Playstyle is far different from the Smuggler (no cover is used, heh), lots of grenades and flaming bolts to shoot at people. Female voice actress is good. I went the Big Gun route with it, really not sure if I like it or not -- that might be because I just don't like Coruscant much.
General thoughts:
Dialog options are sometimes very nice. Some of the companions you get early on are great, others are terrible. I hate the Inquisitor's first companion, but I liked the Knight's first companion a lot.
The overall writing is all over the place. Sometimes good, often just okay, and sometimes quite bad. One important takeaway: replaying a storyline you've already done is not very fun. This is probably obvious, but I'm saying it anyway. Each faction is basically split at the beginning -- the force users start in one place, the non-force guys start in another. The main story is the only thing that's truly unique for each class, and it's generally a better/more interesting story.
I didn't do too much with crafting, but sending a spare companion off to gather materials or do a mission was kind of neat. You have to pay a sum of credits (at least for the skills my crew had) and send them off for a time, like 3 to 6 minutes (at first, anyway), then, if they succeed, they report back to you and hand over any goodies they've gotten. Crafting items works in much the same way -- pick an item you want made (assuming you've got the right resources to make it) and they'll build it for you over the course of a minute ore two. I hope they expand on this in the future.
Big problem I had: some of the larger cities take a LONG time to run around in. Before getting a mount, traveling around is a serious pain. There are Taxi air-cars that work exactly like WoW flight masters, though. Large city areas feel empty, even when hundreds of people are in them ... they're just too large to be running around on foot.
If you liked KOTOR, you'll probably like at least some of what you see here. It feels like KOTOR-as-an-MMO, with all the good and bad that entails.
No idea how well it'll work out playing and leveling with my wife. Guess I'll find out.