I think this place is a mountain of treasure. But even in a treasure vault, not everything is treasure to different people. Goes the same for EA. How would you decide how much time you're going to spend on a particular EA and whether the EA even works...
Personally, I'd rather build my own EA after finding a suitable trading strategy for myself and just take the information here for learning purposes. Reading "educated" EAs and other people's EAs helps me learn a lot about coding an EA by myself :)