Xernuht
[10] Knight
Don't forget the plot holes, shitty main character and pointless harem. As said before the main character is never in any danger or any trouble whats so ever. There's no challenge. Nothing about him is relatable and not enough makes you want to be him besides him being in a harem and being OP. He's mary sue of the story.
The plot holes are supposed to be filled in by adding in more material.
I'll admit that Kirito's not the best main character, and probably has one of the most laughable backstories ever, but he's not that bad once things get moving. As for being overpowered, they justify it up until the end as him having power-levelled at every given chance on his own (more content to be filled in through extra episodes), and having the inherently-broken dual-wielding ability. Remember as well that Heathcliff isn't much better with his unique ability, and the fact that he scripted that part.
The harem's stupid, I'll definitely give you that one. Especially Suguha.
Not in danger? Regular monsters shouldn't ever be a threat in these kinds of stories. EVER. As far as the boss fight goes, Kirito still nearly dies while fighting it, and the 75th floor boss had nigh-instant-kill attacks. With him as the main character, you can't have him getting offed, can you? As for ALO... well, it's the weakest arc in SAO anyways, so just deal with it. Even I won't attempt to redeem that arc.