I ran a test on it on the ship dummy and found it to do ~2300 DPS (no chance to resist, though i had 216 accuracy). It runs into force issues very quickly because of disturbance. That could change if you are smart about alternating tk throw and disturbance. TK wave also seems like its not worth it because it is not buffed by some talents further up in the TK tree.
For a reference, I was getting ~2600-2700 on the same dummy with TK and ~2500-2600 with balance and hybrid. Again, this is a lvl 50 dummy with a lower armor value and a no resists, meaning that these numbers are inflated.
EDIT: TK Log - ~2400, with armor debuff, screwed up a little bit near the end, otherwise it was holding up at about 2500. Stats: 1230 Bonus Damage, 106.15% accuracy, 22.58% crit chance, ~69 crit multiplier, 5% Alacrity. Server Lag: 23 ms. No augments.
TK Log 2 ~2400 Armor Debuff for beginning and end. Stats: 1218.7 Bonus Damage, 108.06 Accuracy, 23.30% crit, 66.92% crit mult, 4.06% Alacrity.
TK Log 3 - taking miss out of the equation ~2600. This test was with 0% added accuracy. Stats were: 1217.5 bonus damage, 23.37% crit, 69.49% Multiplier, 7.76% Alacrity. Done on the lvl 50 ship operations dummy. The purpose of this test was to test how the spec will scale with alacrity. I don't know if this distrubution is attainable, but if it is, the spec can easily push 2700.
I think it will scale alot better once we can get more alacrity in the mix.
One concern with the spec: The initial burst with cooldowns is really really high. I am afraid sages can rip aggro off of tanks even if they give the tanks a head start.