I created a feature request that might be relevant for people who want/need block-level references. It’s not necessarily a replacement for blocks, but it might cover some use cases. It would be useful to be able to create links without having to remember which file or section has the content being referenced. If the links suggested at the moment of typing would include content, after selecting a suggestion, a link with the right location in the right file would be inserted, e.g. [[File##Header]].
In case you think that might be useful to you, please give it some love: Suggesting links based on content