You can't. Flashpoints are one thing(and they will be doing that) but for Ops? Too many OPs bosses NEED 8 people, or at least over 4 people. Bioware would need to redesign every boss in the OPs to just be a tank and spank AND for certain OPs like Dread Fortress level design to be changed. That will not happen.
Out of curiosity, what is it about them? Puzzle mechanics?
I think trying to bolster the solo player to OPs (or even flashpoint level) is the wrong way to go about it though. The enemies should instead be scaled down to soloable levels. That may be too much work for regular mobs but for bosses? Did soloRevan really need to be 2 mil XP and require every major NPC wailing on him with us for 20 min? He should've been just a regular champion in the solo version. The annoyance of the orb mechanic outweighed its innovation. And surely, innovation is not limited to just make multiple people have to do separate things simultaneously.
Back to KotFE and the latest trailer, can you imagine the scene where the Emperor tells you he'll share everything with you if you just kneel, and you do so, and then it cuts to credits?
I don't know why, that image just popped into my mind and I found it hilarious. As if your PC were saying, "F*** this s**t, I ain't becoming no Outlander and fighting another god-damned war. I want to rule the galaxy!" 
lol that would be funny. Though you should have one more scene with you aboard whatever the Fallen Empire version of a Star Destroyer is just leering as you rain fire down on planets. Kind of like the dark side ending of Jedi Academy.
Skadge, the only companion I refuse to raise affection for.
I'm also weirdly proud of my -900 affection with Scourge.
I only did it to unlock the 10 presence bonus.
You know you only need one companion of his role unlocked to get the bonus, right? Companion legacy bonuses don't stack so if you get one melee DPS or whatever he is you got'em all.
That's exactly the point. Besides I'll do anything to get away from that Nadiamance and that North voice.
Nadia is awesome. Well, not really awesome. Just really, really adorable.
I don't think they are irredeemable at all.
They just need to get rid of the xenophobic attitude, get rid of the slavery and stop trying to conquer the entire galaxy because power.
Oh and get rid of every incompetent sith and imperial officer.
Other than that they are cool.
Or just get rid of Sith altogether?
An Empire based on discipline, order and merit is an impressive thing indeed. One that doesn't need psychopaths with superpowers ruining it. That's something my agent would like to see very much.