Here's another use case:
Let's say that you tend to always add a node to the end of your grades that neutralizes Blacks, using Log mode and a restricted "Low Range" setting. It would be great if you could save a Node "favorite" (not just a simple OFX filter), then use the "Select Tool" (or whatever it would be called in the Color page) to instantly recall and apply that Node preset to the node tree in the Color page.
And if you're one of those people who believes in creating pre-built node tree structures, you could instantly apply them to a new grade in the same way.
I really love Launchbar/Spotlight/Alfred/Quicksilver "quick launcher" style UIs for instantly performing actions or finding things on macOS. When people see me use my Mac they are simultaneously befuddled and impressed at how fast I am, because I'm effectively using Launchbar as a replacement for Finder, and I rarely have to use the mouse to click around to do basic stuff.
I'd love for this kind of thing to be added to the Color page, especially knowing that it's already there in the Fusion page!