Are you talking about something like this?: viewtopic.php?f=6&t=1934
For S1 there was a "package installer" done by sublimator, I think. It would download plugins from the community repo and install them for you. Something like that should be possible for S2 too. Something along the lines of that or .Net's NuGet would be great to have. The ability to delete/deactivate packages, too. Unfortunately, I don't think Sublime's API is ready for that just yet.
There's also the Resources section in sublimetext.info, which aimed at collecting all available packages in public repos, but it never took off. I will try to resurrect it when I find the time and the energy.
Reviewing and sanctioning packages is a different thing. I don't know who'd have time for that.
Do you have any other ideas?