Thanks again @jdc for all the info. I will look over this more when I have a bit more time.
I see tone curves are quite early on, especially the RGB one. (Ok, the ciecam one is right at the end). As tone curve is one of the most important adjustments, is there an argument for having them at the end, so you can make adjustments at the end of your RT editing session in the full knowledge of what you’re dealing with?