multiple times i've had some problem that seems like it could've been solved by json-ld, but i can't tell if json-ld would love this problem, or any problem

like "could i put images in geojson or have a nicer way to embed style content in a specified way?" like it seems that the answer is no? i could put some semantic-web properties in there and it'd look cool, but does json-ld… do… anything

If you’re not using it to gain something specific — typically related to protocols or interop with a other orgs — I wouldn’t bother. It’s a tool, not an ideology