That still opens Pandora's box of bad calls and missed calls like D holding . What needs to be done is make D holding a 10yd foul and no auto 1st down, In fact, any 5yd auto 1st down penalty should be changed to 10yds and no auto 1st. If you want to give kickoffs and onside kicks more life have the receiving team line up 5yds back it would make a 5yd kinda free zone