Android_808 pointed important things. And much of it is connected with the infra. (Community Council, I'm looking at you)

There's absolutely no way to autobuild stuff with new toolchain. gcc4.7 works for some packages on Hathor only, for some - on Apophis. Some packages need newer compiler. I suggested a potential way of doing this long time ago, but didn't receive attention or even a "thanks"

Maybe another tab for "community projects" would be a good idea? And I thought about the same - splitting the bounty.

Feel free to edit the spreadsheet in any way you like as long as it stays honest.