This could be an addition/alternative to the Database Forms idea, so that people could fill in a page but not edit some of the elements. Not sure how this would work from a permissions perspective.
https://s3-us-west-2.amazonaws.com/secure.notion-static.com/0edc50de-8899-40ee-aedd-688c4bce3eec/Locked_Blocks_Request_Edited.mp4