TK Sage only has 5 abilities for their core DPS rotation.

This as well. I want to go out and explore, and do lower level stuff I may have missed, but I can't watch general or post LFG in it if I'm not on the fleet. And for the "omg, too fast to 50, start an alt wait for everyone else" I really don't want to start an alt right now, I want to work on gearing my main. There are also roughly about 80-100 on my server at level 50 in prime time (and growing each day), it was one of the day 1 head start servers with guilds. Yet, searching for 50s LFG, I find at most 3 using the system at any given time. The system can work, if people use it, I played FF11 for over 6 years which used the same system, and it worked well because the community put it to good use.

I've been 50 for about 4 days now and have yet to be able to do a level 50 Flash Point, and it is not from lack of trying. I use the LFG system, and I ask in general while sitting around the fleet all day, and look around for other 50s seeking. People either aren't using the system, or the few conversations i get going in tells end up being declined due to not being a healer, or not wanting multiple of my class. Yes, awesome community building here, right?

Disturbance is a core ability of TK, while its base damage is one of the lowest of sage's spells, it procs a lot of different abilities, specced properly it has a really high crit chance, a chance to do an additonal 30% damage, gives a buff that increases damage done, increases force regen, and has a chance to proc instant casts for our most damaging spell.

1. You are progressing your character even while doing alts. You gain Legacy Exp, which most likely will be similar or even a hybrid system of Alternate Advancement and Heirlooms (all just theory though, we don't know what it'll be exactly). 2. The people chiming in that there's 0 endgame content. No, he's saying there's no solo content. I didn't beta at 50, but I know for a fact there are many heroic flashpoints, and I believe there are 3 raids, with 8 (iirc) bosses total, and the main one with 5 bosses has a hard mode. There's a lot to do endgame when others are 50. 3. There will be patches. The vast majority of players who you never even see or hear won't be 50 until probably the second or third patch. They aren't going to cater to the super faster people already 50, they're going to polish the journey to 50, then start getting more content for level 50 players hopefully when the population at 50 starts booming by the first or second major patch.

I just found out everyone gets this assassin droid as a companion, I couldn't find much info on it though, is it optional or will it happen as part of the story? If optional, when is the earliest you can get him?

as annoying as no grace period is, Bioware has done a good job in staying in contact with us and retailers to help out.