Kirito x every female
Eh. The show should be called Sword Harem Online. But SAO is technically a "SHO," so it didn't need to be redundant. I don't think Kirito should be with Sugu or his mom, or Shino, or Silica, but everyone does like him, so I see where you're coming from...
4/10
Reasoning:
There's only a few girls that could have been with Kirito, in my opinion. Asuna is an obvious one, and Argo, though the chances are slim, has known Kirito longer than the rest of the harem, as she was a beta tester. I seriously doubt she would actually like him though. Suguha would be gross with Kazuto, and Shino and Lisbeth would actually be half possible. Not every girl, but most of them.