NIP-51 allows users to create a list which effectively imports items from one or more other lists using their naddr identifiers as pointers. Cool feature, I think!

I wonder: Are any clients or apps actually utilizing this feature yet? I know listr.lol allows me to add pointers to a list, but I can’t get it to do the actual import, i.e. import the actual items and show me the final composite list. Unless I’m just missing it.

If not, anyone planning or thinking about utilizing / building on this feature?