The first one reminds me of GT1's luggage space rule, which made sense for all of 3 months before we started seeing prototypes with road car lights.

I don't know, it's hard to quantify regulations. LMP's have been the pinnacle of innovation in motorsports for 2 decades but that came at a cost with everyone but Toyota bailing out completely while F1's competitiveness only improved. Tho that's kind of expected since Toyota is essentially planning to buy a nearby universe in the near future.

Imho if I was tasked with designing F1 regulations, I'd get a group of engineers together, make a spec series, and then see where we can make wiggle room but not enough that spending $100m more would result in elimination of teams that can't afford that much just to test different visors for the driver or some other shit like that.

I think you're onto something, maybe limiting how much vortices a wing can make in it's standalone and under different configurations. Perhaps 45 degrees and 100 KM/H or something like that if you get me. With downforce moving towards underbody ground effect I feel like there would be less politics around the overbody downforce generators anyway.