Vim: Add cursor to every copy of selection in motion

[mythmon]

Today Zed supports the keybinding g l to add a new cursor to the next occurrence of the selection, and g a to add cursors to all occurrences. I'd like something in between though. Often I find myself doing some refactoring that would benefit from multiple cursors, but I don't want to select the same pattern throughout the entire file.

It would be great to be able to say something like "add a cursor to all occurrences inside this function body" or "on this line". Using the motions like p for parapgraph or { for inside a curly-brace delimited area would work well, and leverage the existing concepts of motions.