Personally, my biggest issue is that I don't like so called "action" MMOs. If I wanted to play a shooter, I'd play a shooter....not a shooter disguised as an MMO. I like my tab targeting, skill bar, and other shinies.
The reason more and more long term supporters seem to be leaving has to do with the consistent empty promises and real lack of content. It's like being told and expecting a banana split only to get a scoop of vanilla: every time.
There's no driving, it's pretty much done. Unless 6.0 brings something really awesome to the table, the game is pretty much going to pepper out and die.
GTN Inflation isn't a credit sink, it's transferring wealth from one player to another. A credit sink is something that takes money out of the economy: typically consumables. There's simply not enough, nor enough good ones.
As my inquisitor put it: "I'm starting to think that the galaxy is only going to stay saved is if I'm the one running it."
As for the way it's written being a matter of opinion....No. Do a play (or replay) and take dark side choices. You'll see how dumb they are...and how they don't fit the story line given.
Most people characterize it as bad because it's clearly written for a light side character...the dark side options are not only an afterthought but obviously more chaotic dumbsh*t than most.
Going back to the Republic or the Empire simply doesn't make sense for every character? What about the one that wants power...and will do whatever it takes to get/keep it. When "Evil Overlord" does fit the character, why would they share power (or submit to someone else)?
There are, IMO, far too many "action" MMOs as it is. Not all of us have the twitch reflexes of a teenager, nor a desire to see how fast was can push combo buttons. That was probably the biggest turn off from B&S for me.