But doesn't that create a championship where to have any hope of being competitive you must run 3 cars? Which then means teams that can't afford too should just not bother? That's just going to lead to even more teams leaving. If your going to allow a mix, you have to make it fair, otherwise it's just all back to whoever has the biggest wallet again, which is why we are in this situation.
You've used common sense, which is unlikely to be the prevailing approach at FOM.
F1 has pretty much always about who has the most money to throw at it.. The two car teams will still be able to score the same because only two cars are awarded points, but yeah it would be unfair. Better that than having cars driving around with tourists in them though.