Ideas from a non-programmer: Perhaps you can cross-seed somehow, would it be possibly to use your sandbox to procedurally generate imagery in Photopea, for example? Can you pair Photopea up with something like processing.org's p5.js (I think that's what they call it) so people can do image processing use JS and outputting into Photopea?
Also, fwiw, I've read--and consider it useful to reflect on--the idea that one should avoid comparison with others and seek first to compare yourself with yourself: have you improved, are you nearer your goals, have you increase your fulfilment ...
