I changed all the interior and hatch dome lights to LEDs, Amber for the two map lights and the hatch and a Red one (that stays on all the time) for the one in the back seat.
I also put in red footwell lights (LED kit $12 and $100 labor at the car stereo installer store). They wanted $1260 to install the two OEM accessories (console and interior illumination).... PAH! Actually, the prices for any of the Honda accessories on the Type R are idiotic.
I have zero plans to monkey around with the drivetrain or the suspension. At some point you just have faith in Honda engineering.
I did switch to 245/35ZR19 wheels and tires so I could install all-season tires. The Summer Tires provided are stupid unless you live in Florida or So. Cal. And I saved 10 pounds per corner with the switch. Those 20” OEM rims are HEAVY!