Game has a lot of potential, but glaring bugs, imbalance and mechanic issues take the shine off.
Initially I was very impressed with the character progressing (played a Sith Assassin) with the spoken dialogue for all quests and cut-scenes and a well rendered world bringing back the nostalgia of the original movies. The character has some impressive moves early on, and the fighting is well animated.
However it didn't take long to encounter bugs in PVE such as being able to wander off the edge of the map, companions despawning, graphical glitching and quests that were impossible to complete due to bugs with NPCs.
I persevered, and tried pvp, but that is even worse - ranged classes are massively overpowered compared to melee in the most common WarZone (Huttball) due to the layout - ranged can attack from relatively safe positions as the environment makes climbing to the top of the platforms laborious. There are too many knockbacks, stuns, roots, pulls etc and no diminishing returns (there is an alternative system called "Resolve" but that's currently broken, or at least ineffective.)
In addition to this, all abilities are on the GCD, so there's far less skill and options involved than in say WoW. Combat feels slow, and you can't jump to stop an action and immediately hit something else, since the GCD has to tick down. It just didn't feel very smooth or involving. The fact that in Huttball your toon will be getting pinged around like it would in a pinball machine, due to all the CC makes it worse.
As there's so much phasing and sharding or the content it was unusual to even see other players as I levelled. Even on the imperial fleet - the main hub, on a "high pop" server it seemed almost empty. The game encourages solo play to the extent it's easy to forget you're in an MMO at all. I never even ran a FlashPoint (dungeon) as there's no finder tool, so people have to resort to yelling in the hub - and players have to be in place to physically go to the FlashPoint as there is no way to summon, which all takes far too long.
The final straw came when the updater failed, and ended up in a loop, constantly re-downloading an 11GB file, then claiming it was corrupted, and restarting the download. Bioware have been blaming this on users memory, hard disks etc, but it turns out that some servers have been hosting corrupted update images, and the community have had to solve it themselves by sharing working updates via torrents. Biowre still claim it's a user problem and have been shutting threads from everyone affected (a LOT of people). Also the PayPal payment system was broken when I left.
So to sum up, the game could be great, but it feels rushed and unfinished with too much missing and poorly developed. It's a real shame as I was looking forward to this as my next MMO.