I wonder if we should talking about what is the true canon, or about homebred ideas, for example new echo planes: pl. of mirrors, the spirit realm, the infinite staircase (do you remember the videogame Control?)..
Maybe WotC would rather to await and after "gather" the best ideas published n DMGuild.
Why thank you! I wouldn't have thought myself wise enough to be compared to a Zen Buddhist teacher, or my internet posts powerful enough to provoke great doubt in the reader, but I'll take the complement.