Amusingly enough, I left about a week and a half after the Guild Summit. A lot of it was MMO burn out, but part of it was also the handling of SGRs. I got discouraged; I didn't want to raid and I wasn't up for an alt. So I left.
Honestly something like that might have worked back in beta when there was a large community of folks that wanted this content. Of course most of those left before the game even went live though after it was made clear this content wasn't being added for launch. Out of the remaining folks I would guess most left around the time of the Guild Summit like I did.
I came back about a week before my birthday in September because I caught the bug for this game again. I'm having a lot of fun with my sniper now, but this current situation is very disheartening.