I really didn't like Secret Invasion. I thought it was a lot of build up to a big mess that didn't even make sense. The number of New/Mighty Avengers books Bendis used to "explain" how all of this happened add up to crap.
What was the Skrulls "master plan"? To infiltrate our world so completely and KIDNAP a significant number of heroes while keeping them alive... And then to lure all of Earth's heroes to the Savage Land so they could... Set all the captured heroes free among the real heroes with Skrulled heroes mixed in so everybody can pose for "huh? What the eff" pictures with the jungle background, hi-jinks, etc.
Why would they need to completely infiltrate Earth in order to set that up??? How did Elektra being a Skrull help them at all?? It just doesn't make sense!!!
Sorry, I was really disappointed by Secret Invasion, I can't talk about it in nice tones