The sapphire 34 wasn’t available when I built up the rootdown. I had a 2016 diamond on it and upgraded to the newer version about a year ago. If I were to do it today I think I’d still go with a 150mm fork on the rootdown to maintain the geometry, but with that spacer it sounds like you have that covered.
Thanks for the background info.
After your input, taking into account the burliness (or lack thereof) of my local trails, and reading the design philosophy behind the Doctahawk (on a site I’d rather not admit to reading,) I think the Sapphire 34 might be a good fit.
I can maintain the geometry with a spacer crown race, and have slightly less impact on that geometry with less travel. Doesn’t hurt that the Sapphire is slightly lighter and a little cheaper...