Yup, fact is wear gets exponential and things get MUCH more critical as you reach the top end of the rev range given current parts allowed. So anyone got PROOF of usable good engine life before rebuild with the new cam given the current metallurgy allowed?
Heck, may as well open up the whole piston/block/cam/etc metallurgy and let my buddies design bits that can easily go over 7k rpm. i'd make a small fortune reselling tweak parts...
...of course i'd have started with a much larger fortune
Just write the SCCA and let them know how you feel. It is like pissing on a live/active spark plug posting here.