Companions were pretty much OP when KotFE released, but now they've gone too far in the other direction.
I just spent well over an hour trying to beat ONE combat engagement on the Makeb H2+ "The Specialists." Starts out with a Champion Gold, not a big deal, right? Get him to about 1/2 health and 3 silvers join in on you. Not very much later, 3 more silvers join in the fray (all the while the original gold champ and what's left of the first 3 silvers is still pounding away at you.)
I died 8 times in a row, EIGHT TIMES. I used every single freakin' ability a Merc has, I healed like a sonuvabeetch, I set Comp to Heal, DPS and Tank, I even used Heroic Moment (or whateverthehell its called now) and died EIGHT TIMES. I could have played it a hundred times and still would've died every time. If some other player hadn't taken pity on me and given me a hand on round #9, I'd still be lying there on Makeb, dead.
After that, in the same Heroic, there's another Champion Gold boss (forget it's name, big gorilla-looking thing,) died 4 times in a row on that one and it never made it down past 1/2 health, so I had to give up. I'm not a noob (been playing since beta,) and while certainly not the greatest SWTOR player on the planet, I've always held my own either solo or grouped. There is no way I will ever beat this boss on my own the way things stand now, ain't gonna happen. Don't tell me I can "solo any Heroic 2+ with only a Companion" if it's not reasonably achievable in 3 or 4 tries, that's just ridiculous. I have a job, wife, kids, dog and house and don't have hours to invest in beating ONE stupid freaking mission, it's absurd.
I used to solo Heroic 2s all the time prior to KotFE, I'd just level up past the Heroic sufficiently and come back and knock 'em out. CAN'T do that anymore, now that the level is capped for each planet. They weren't always easy before, but I could get through them.
Grouping has never been much of an option for me as I am only able to play pretty late at night/very early morning. When there are only 12 people on a planet or 2 guildies in the whole game (including myself,) your odds of getting a group together are minuscule. I don't have time to wait 45 minutes or more every night hoping I can raise a group, I have to get in there and start playing if I want to get anything accomplished at all. Right now, for example, I'm spending my precious time writing here when I have to be up for work in 4 hours and 15 minutes.
I've been paying for and enjoying this game since Day 1, haven't missed a month's subscription yet, but I will have to seriously consider re-upping if something doesn't change soon. No, I'm not rage-quitting if Comps don't go back to exactly as they were when KotFE launched, but damn, please just let me play the friggin' game at a reasonable pace, PLEASE! This game is one of the only outlets of relaxation in my life and I don't need it, too, to become another avenue of frustration and disappointment.