A very important evolution of the Block editor are the coming PSP (Partially synced patterns). I think it can be tested already with the current version of the Gutenberg Plugin (personally had no time for this so far).
I would appreciate an assessment from the Pinegrow Developers. Are blocks created with Pinegrow compatible out of the box? If not, what are the plans in this regard? Is there anything to consider now for having compatibility in the future?