I'm fully behind the idea of having your H&NR recertified after a wreck - hell you can put it in my logbook that such docs are required along with repairs at the next event.
but the amount of perishable equipment both on the car and the driver has reached absurd levels. seat (if following FIA), H&NR, window net, belts, helmet,... best case you're looking at ~$1500 every 5 years, with an additional 500+ every 10 (hat). and that's for the low-end FIA and SFI certified stuff. it's equivalent to reducing your entries by at least one a year IF you budget 5 years at a time. more than likely, it's going to result in a "bye year" every fifth year for a large percentage of the potential entrants. we have enough trouble getting guys back after taking a year off (for whatever) already. what will the fields look like in 6 years?
if regulated minima or driver's personal safety standards or needs put better than baseline equipment in the mix, the number can spiral to $10k+ over 5-10 years REALLY quickly.
and forget attracting new folks, particularly the younger crowd. car cost is approaching required gear costs. (assuming guys start getting out and the cost of strong, built cars drops a bit to the $3-4k range)
I hope I'm wrong