The point of getting the CTR (in my case) was so I wouldn't need to do anything except add pads, high temp fluids, and normal 'HPDE' maintenance. This was wishful thinking. It's still a good car but Honda might have oversold it a bit
After researching HPDE overheating issues and solutions, I've decided that there are a couple simple changes that might make a difference: Water Wetter and (to a lesser extent) engine oil. Temperature and humidity are starting to decline in Pittsburgh, so I probably won't know the impacts for a while unless I decide to take the car down to Sebring in the Spring. If the high heat issues are resolved, I'll move down to 18" wheels and tires to keep the durable costs in check.
More involved solutions that I've read about, but shouldn't be difficult to do, are adding a larger radiator and oil cooler. There are still not a lot of aftermarket choices and only a few people posting their HPDE data.
I may forgo touching the engine bay and run the heater at full blast with some air duct extensions on the floor heater vents that route the heat way from the driver's feet. Not my first choice, but this should keep the water/oil temperature in check without burning my ankles as long the parts don't interfere with the pedals. I'll need to figure out a safe clamping mechanism that will hold firm and be easy to remove.
Dave is looking into getting a Camaro 1SS with the track pack due to similar issues (in addition to differential cooling) with his Focus RS.
Once things settle down at work and I'm motivated enough, I'll see about getting in one more track day before the venues close.