I don't think adding Redpower was a mistake; It's an amazing mod even still (but not for long). I just think it was a mistake catering to Eloraam and delaying the pack because of it.. I can understand if they're working on an FTB map, they should keep it. But again, they should have let everyone else have the new version while they work with 1.4.7. Great mod, bad decisions of catering.