iPhone as Brush Box Companion App

I far prefer Fresco to Procreate, but the latter app has a feature where you can use your iPhone alongside your iPad with the phone app acting as a tools/brushes box. I want this in Fresco! I want to be able to create multiple, specific brushes saved project folders in my CC library. Right now I can favorite a brush, but that is far less useful than being able to save a specific brush's details, including saving multiple of the same brush with each having varying versions. Menu diving on the iPad app to select between brushes is not ideal. I would far rather have a tool box of saved brushes. And if I could access that tool box through the iPhone app where it sits open next to my iPad, I would be delighted by that workflow. That would push Fresco cleanly into a being a tool for long-hours professional use. Thanks again.