This may be a slightly weird use case but I accumulate tons of pdf’s that are often relevant to my notes and want them easily embedded and viewable in a first class way. Obsidian is a great example of how not to handle a pdf locking it to a small portion of the window and not allowing it to be full screened.

Forcing the user to dump all of their pdf’s into something like google drive locked away from the rest of their notes is a crappy experience and h fortunately keeps me using apps like evernote purely for this functionality.