For those interested in a Defense only League, join my IDP league over at ESPN.
IDP scoring systems have always been an issue, but this league has scoring settings devised by the guys at the website Profootballfocus. They created a scoring system that balances the different positions and makes for an interesting IDP only league. If you want to get an idea of how it works , search for 'the pff idp scoring system revisited' on google.
The league name is 'IDP Only League' and it has slots for 10 teams. The draft is on Aug 24th. I can't post the link, but search for it on ESPN