I agree with your points on the motorsport Lotus's. Your point about the Ultima, while technically correct i would argue is on the same page as a Lotus, im sitting here with a 5.7L v8 turbo one that will be entered if permitted (Aus delivered, not a backyard build). Im looking forward to seeing if it can be entered (according to the Superlap guys) based on the Lotus's being allowed. If not, no biggie - it needs to get used though and this is such a great time to dust it off
Maybe a minimum production amount of vehicles, and the car at one point of its life at least, being able to gain normal road rego would help to eliminate these "non JDM tuner" cars