Coming from Logseq, Outlines and Linked Mentions

Hmm, so if I slightly modify your example:

- [[My Project]]
  - # New Topic
    - Lorem Ipsum

then it basically “pushes” this content into the Linked Mentions of [[My Project]] currently (in the latest version). What you’re asking for that’s not currently in the SB feature set:

  • boundary definitions with [[...]] to define the block (an outliner like LS implicitly defines the block to be all children, which SB can’t quite do)
  • live editing of the transclusion (but I see this as a different issue – the fundamental concept of live editing doesn’t exist in SB)

Are these what you’re suggesting?