If for no other reason than ease of explanation, every promo up to
the Binding Ring should be legal, imo. That way we have an easy to follow rule that people understand.
Black Rider and the Weta cards should be legal for that reason.
We need to make things EASY to understand. That will get us players. Movie format in particular is the most potentially attractive format to returning players for several reasons: A) They probably already have movie format cards. B) They are pretty easy to get and cheaper. C) Its the most balanced and easy to understand blocks.
So my vote is that Movie block consists of every promo up to 069
The Binding Ring.