Sunroof is a defianate no. It takes to much away from the body stiffness.
Cruise control no. Why do you need it if you are constantly accelerating
Sound dampining no. I love the sound and it helps with the weight reduction.
Going with the racing theme of the type r, I would do a greater weight reduction. Throw in a rear upper strut bar like the jdm. Raise compression to 11.1:1 like jdm. Keep the jdm recaros. Hell, just give us the jdm