I posted this in another thread that Bioware kindly closed because of the negative title towards their decreasing population.
Check out this site.
http://www.mmodata.net/
Even though he gives his accuracy ratings, most of the data seems close to actual #'s for other games. He also gives his accuracy ratings for SWTOR as a "B".
According to this site, SWTOR has 1.2-1.3 subs atm. I find this extremely reasonable 3 months after launch. (This was before the asian population was released, so I'm assuming the 1.7 million is more accurate counting asian countries.)
Personally, out of the 10+ people I knew playing this game, only 1 remains currently subbed. I just unsubbed this past week.
The game wasn't terrible like some mentioned on this forum, but from a PvP standpoint, it was unprepared for that community. It really didn't bring anything groundbreaking to the genre and played things way to safe. Additionally, the server population level is way too low for an MMO.
Unfortunately the game plays like a single player game, and in that aspect, its great. As an MMO player, I'd expect more of a social environment.
That's just my $.02.