Basically I'd love a handful of values that lay out a car's X/Y/Z resistance to chassis flex as well as basic aero flex, maybe a 1st and 2nd or 1st, 2nd, 3rd order multiplier of downforce lost with load on the wing. With the first I could put the extensive early 70s F1 data I have to good use, with the second I could better model the (especially early 90s) F1 cars I'm working on. Perhaps not the most 100% accurate approach to it but it'd be better than nothing. Oh, and whilst we're on the subject diffusers that have a similar (if basic) link to throttle % to allow the FW14 and similar cars to be modeled better. The FW14 had a blown exhaust only on-throttle giving it infamously strong off-throttle oversteer. Here's hoping.