Well, if need my help, I'm in.
Maybe there should be different difficulty levels, like SKG said, suggest that people new to pep start with less detailed modes, have them start with the H2 models, or if they're really insecure the H1 marines. Then when they are confident enough to start working on their actual suit they can start using the HD models.
One thing, that I think, should NOT be done, is making this a linear tutorial, meaning that it 'only' shows how to make Master Chief armor, we have ODST, multiple weapons, permutations, and possibly Marine armor, in the works. So limiting this to 'just' spartan armor is a bad idea imo.