Yes, when I say "a fully formed Justice League" I mean the one we all know and love from the comics. As I've said before earlier in the thread, most of this season most likely would not have been realized on television. I still expect that Miller will introduce Diana and Green Lantern prior to the conclusion of this season.
Miller has I believe, said that Effigy is indeed connected to season 11 proper, again I believe this is just another way to start connecting all the characters together.
I think I posted this before, but if not, this is the release schedule for Season 11 up to April.
The Anit-Monitor as mentioned above is crucial to Crisis on Infinite Earths and was the main antagonist. All signs since we heard the word "Crisis" point to Miller adapting Crisis on Infinite Earths.