Add "delete block" into block context menu

[agentydragon]

I often want to delete a block from within some page's references - particularly, I often open the TODO page and go to the references to see open TODOs. Then, if one of them is not relevant, I want to delete the block with the TODO.

I want to do that without navigating to a different page, because that would make me lose my place in several pages of TODOs. So I usually Shift-Click the block, then navigate a bit in the sidebar to delete it.

I would expect that selecting all the content of the referencing block (the TODO) and deleting it, and then pressing Backspace in the empty block, should also delete the block, but I think it either has not worked for me consistently, or I as a user am not confident that it works as expected (which might be just a UX issue). The block does disappear from the reference list, but that from my point of view as the user might very well just mean it's now empty but still exists, which I don't want.

It would help me to:

• If Backspacing an empty block in a reference list should delete it, make it more obvious to the user that this is what happened. Idea: for example a pop-up message saying "Block [...] deleted". Or making it so that when you change a block from a reference list so that it no longer has the reference, not immediately hiding the block, but rather changing its style (e.g., greying it out with some special icon, that would say "Block no longer references the page" on hover) and only removing it from the reference list when the user uses some special control (like a "Refresh (query results / reference list)" button).
• Or having a "Delete block" option in the block context menu, somewhere here: