Weight: control arms can be made of aluminium. Unsprung weight is less because you don’t have that big axle housing and diff moving around.
Cost: An axle housing is a big chunk of metal. Material cost should be higher, though manufacturing cost will be lower due to parts count.
Wheel hop control: Don’t see why this couldn’t be addressed with proper shock valving and/or traction bars.
Why do you care about the front suspension when you are only going in a straight line anyway?
Sersiously, though, actually having camber and toe adjustablilty on all four wheels is a huge benefit to the handling of the car, and this car should destroy the current Mustang when it comes out.
Weight - We can get the weight down through the aftermarket, but I dont even like that it comes heavy, and IRS in these kinds of cars is always heavier
Cost - The increase in parts and complexity outweigh the slight reduction in actual iron usage
Wheel hop control - Maybe it can, we’ll see. Its in this area that I will refer to the experience of the vette and gto guys experience on it
Front Suspension - you know Im a 1LE 4L kinda guy. Why do I need good suspension in the rear when I just need it to hold on for dear life, suspension is for the front of the car
Seriously though, the car will be incredible as a sports car and a daily driver, I cant imagine anyone not buying one. I just have to look at it through my mindset. Can it hold 1000hp and weigh under 3500lbs with cage, bc thats my defination of a street car I want to have