Time for MORE THOUGHTS ON MOIRALLEGIANCE! Yaaaaay!
Kanaya was brought up as a possible "hot" troll needing a moirail to help cool her jets. I agree that she may have some violent tendencies that haven't really been exposed all that much - especially in her willingness to slice things up with her chainsaw without much of a second thought.
However, I don't see this working out because Kanaya works out so well as the "cool" side of a moirallegiance. She has at least served that position for Vriska in the past, and for all we know, she could still be there now. There's not really been strong evidence of a split between them, per se, although there hasn't been a lot of evidence of her serving that role any longer in recent situations. However, even if she's not serving as a "cool" moirail to Vriska anymore, she almost ended up as one to Rose until she made note of it and decided she didn't want it to happen. And actually, that doesn't necessarily preclude it from being the case right now, or becoming the case in the future - as we all have seen, Kanaya's not exactly the best at steering her relationships in the direction she wants them to go.
(As a fellow Virgo, I can relate, but that's a different topic.)
So it's for these reasons that I think it's pretty unlikely Kanaya's gonna end up as the "hot" side in a moirallegiance. Possible, yes, but probably no more likely than Karkat ending up in one. So back in the context of my argument of counting "hot" moirail trolls, I don't think we really end up any closer to the required number even if we consider her as a possible "hot."
Now, I'll move on to the discussion of Feferi Eridan that I didn't get to in my last post.
My basic argument, as I stated previously, is that Eridan really doesn't need a moirail any longer, so it's not likely that they'll reunite, as BYB has proposed. Reasons?
1. As I've gone to explain, I don't really believe in the troll serendipity theory any longer, at least when it comes to moirallegiances. I suspect that others still might subscribe to it, which is fine. At the very least, though, it's not as strong a reason now to insist that each and every troll must end up as a moirail.
2. Feferi ("cool") made a very good moirail for Eridan ("hot") while they were still on Alternia, as she made quite the effort to prevent him from killing all the land-dwellers. Now, though, all of them are pretty much dead anyways, barring the 10 that remain in the Veil with him. She doesn't benefit from the arrangement, either, because, as she said, he's quite the handful to deal with. She doesn't need to feed Gl'Bgolyb anymore, too, so there's really not a lot for her to gain from the arrangement.
3. Let's hypothesize that he could still want to go all genocidal and kill the remaining 10 land-dwelling trolls, and thus he still requires a moirail to prevent this from occurring. I feel that these key factors would deter him from making such a decision:
3.a. He doesn't have the power to do it. He's no longer got any doomsday devices, not that they would've actually worked anyways. He's got his big fancy gun, but all the other trolls have big fancy weapons, too. He's pretty much evenly matched with Sollux's eye lazors, as we saw in Make Her Pay - and that's just one troll! Even if he got all genocidal for some reason, the combined resistance of all the others would have no problem stopping him. So even if he felt like killing all the other land-dwelling trolls, he surely understands that he just isn't powerful enough to do it.
3.b He doesn't have the motivation. Eridan's desperate for a kismesis, which wouldn't really work if everybody but him and Feferi are dead. Granted, he could end up in a kismesissitude with Rose, as was (possibly) suggest in Alterniabound. That's only a theory at this point, though, anyways. He's not shown any signs recently that he wants to continue being violent, aside from a kismesissitude. And failure in an attempt to kill the land-dwellers would likely result in his being shunned by every other troll, leaving him with no kismesis or matesprit or even any friends. It just wouldn't make sense for him to try.
4. One of the recurring themes for Eridan is that he's never successful in any of his relationships. It's kind of a running gag at this point. Maybe he'll luck out and find a successful matesprit at some point, but he seems like one of the least likely trolls to fill all of his quadrants.
(This Feferidan argument is actually the original idea I was going to propose to attempt to debunk the Theory of Troll Serendipity. I don't think it's quite as strong an argument on its own as my original one, but it certainly does lend some more credence to my suggestions against a moirail pairing for each troll.)
Also, sorry for the wall of text again. It happens sometimes. At least I kept up our tradition with some random bolding, right?