By the time the LN's get fully published in 2014-ish we'll get Alicization.
And oh SAO: Progressive should be in full swing by then too heh. We'll look back at this anime rendition and think "Hey it's Sword Art Abridged!" xP
1: Introduce Shinon + Battle with Behemoth
2: Kirito + Plot + Entrance into GGO
3: Kirito meets Sinon, shooting game, sign up for BoB
5: Start final matches
6: End Final matches
I actually have a small thought in my mind that somehow they'll do Fairy Dance and Phantom Bullet into the last half, start up next season with Caliber to reintroduce the characters, and move to Mother's Rosario. Alicization I can see probably taking up quite some time on it's own, so I can see it as either it's own series or OVAs