How about this rule: The elimination of A/FC from the rulebook years ago. Not sure why it happened, because I think it was eliminated even before injected fuel dragsters became competitive in TAD. Now, you might say that NHRA doesn't need the parity headache. But, after years and years of work at it, the BADs and A/FDs are pretty darn close, with each combo doing better than the other under certain conditions. I think NHRA could get a rule package for an injected nitro FC that would be close right off the bat, and could tweak it as needed, like in TAD. How many think having injected Nitro FCs would be a cool addition to the Alky FC class? I do! I remember as a kid they were part of the landscape, with several circuits made up of these cars. And of course, Ken Veney had a badass Vega in Pro Comp before going blown alky. NHRA really markets Nitro, maybe now is the time to bring back another fuel class.