[johnknowles]

I'm curious if Notion has any plans to make the "type" property user-extensible. Given the current data-structure, which decouples the block data from the way its rendered through the type property, a user has to define only one template for rendering arrangements of UI components (boxes, bullets, etc), titles and children. Extension could operate even at the level of derivation, where users could extend current base types with custom styling (color, font, size, border, etc) and child layout. As a plus, derivation would allow for blocks to be shared, with a fallback default rendering if users don't share custom types. Given the multi-dimensional nature of the uses of Notion (for work, personal projects, life management, etc), having types that were specific to their domain (grocery list, monthly budget table, contact card) would be a useful tool to semantically separate blocks by their presentation.

[euroderf]

This sounds a bit like customized structured data types with style inheritance, à la DITA.

[jitl]

This kind of idea is very interesting, but I won't comment on future plans.