I could guess Notch dosn't have time for it, but I'd be happy to make a site that lets you upload maps and displays them for download. Infact I am working on a map to image thing right now. So you could upload you map give a discription and the website would generate a picture for it. It'd be kinda minecraftskins.net but with maps....
Do you think I should make this?
(I do know php and C++)
(I didn't think this would go in suggestions.)