Remix->original attribution is common courtesy (and a “pick a license” menu wouldn’t hurt either), but original->remixes is also handy (indicates how useful a project is, gives ideas, etc.).
https://scratch.mit.edu has both, and it really helps give a sense of community.
We plan to implement both of these features (we currently track remixes but haven’t built the ui around it yet). Thanks for the suggestion 
Is there any sort of timeframe for this? (Just curious.)
i can tell you that we’re not actively working on this but it’s on our short term roadmap for things that we usually get to in a month or so