And after SH destroys Cadsuane, I'd like to see him take a stab (both figuratively and literally) at Egwene. Other than those two:

Merise and Daved Hanlon. It would be nice to see that horrible wench beaten into submission, then to death.

Rand and Alivia. Weird? Sure, but she would do anything for him, is capable of taking care of herself, and would squash any Aes Sedai who dared blink wrong at him if she were involved with him. They'd be perfect together.

My second choice for Rand is...surprisingly...Faile. Like Alivia, Faile would take care of Rand and keep Aes Sedai (and everyone else) from treating him like crap. She'd make him stand up for himself more, would "do the things he could not", and would get a man that, eventually, would become what she needs in return. Perrin is not capable of giving her what she needs, no matter how she tries to show him. The only reason I would not pick her as a first choice for Rand is because she cannot channel. Even so, I'm willing to bet she'd tell Cadsuane where she could go in no uncertain terms the first time the old bat laid a hand on "her husband" as well as when she was disrespectful.

Mat and Birgitte. Yes, she only likes ugly men and Mat's not ugly but it looks like she won't get her Gaidal Cain this go around and I'd rather see Mat making love to a shoe than have him stuck with that stuck up, ignorant, bigoted, enslaving Seanchan jerk he's now married to.

Nynaeve and Logain. I think they'd be great for each other. Logain has no death wish and wouldn't put up with her crap and, likewise, she wouldn't put up with his. Plus, this is just my hunch, once Logain commits to a woman I'd be willing to bet that he'd do anything for her save being her lapdog. That's what Nyn needs. Hell, she needs any man that actually has a heart and cares about her more than his dead owner.

Tuon and, if she were still alive, Renna. I'd love to see Tuon be forced to channel then collared for a very long time.