Sasuke is suited for only 3 options:
1. Somebody badass and reserved like him. Obvious reasons for why they match, and she must also be powerful. No woman in the current Narutoverse comes close, and the only woman that ever did is dead and already had a love interest.
2. A complete opposite of his personality. Basically Naruto's female version, it's already clear as day Sasuke doesn't mind someone like that. And no, i'm not suggesting anything.
^ Both of the variants will also not allow themselves to be pushed around, since Sasuke will try to be the dominant one.
3. Single. I'm betting that's what he's going to remain in "The Last", and maybe even the whole series. My money's on this, though i would like for the Uchiha clan to be continued.