I dont know how many arcs there are after the GGO-arc, but this anime really needs an element of true danger again. SAO S1 was great with the whole "die in-game, die irl" concept. Right now, however, Kirito and all his waifus have "immortal main cast" status, perceivedly so anyway. Would it have been so difficult to have Sinon raped here instead of the Disney-esque Happy End with Kirito appearing out of nowhere? Asuna, Leafa, Silica, etc - they all send out the feeling that they´ll never be at risk of danger ever again.

All of this basically reduces all possible occurences to "watching Kirito doing cool sword moves", without anything else of substance.

If there is an arc after this one, I hope it begins with Asuna´s death, so we can have some darker revenge plot, instead of this ... easy mode stuff.