What pypi doesn't do currently? It doesn't do many things that a good game release system would do. Video/youtube links, and even screenshots aren't available. Discussion has been disabled (they found it way too hard to moderate). Even ratings are not on there (which can help for discover-ability). Another issue is that closed source things aren't really looked apon nicely there(but it is allowed). Finally, packaging in python still isn't the easiest thing (it's definitely not as easily as uploading a zip file, but it is waaaaaay nicer now than ever before).
Any work that goes into making the packaging system for python better for games helps out with other python game communities as well. We can perhaps even gain allies from the other communities to help improve things for games in general.
Here are where the pypi projects live.