I think this has been mentioned before but I could not find the discussion. I would like to float the idea of a PinguyOS repo not to replace the Ubuntu repos but in addition to them . Instead of having all the ppa repos; all the apps that Pinguy adds to the distro would be in the PinguyOS repo and updated by the Pinguy team. Then the average user would not have to worry about all the ppa repos which can appear and disappear such as the corn ppa for VLC. It would be much easier for the average user to update and this, it seems to me, to be in line with the PinguyOS philosophy. So you would just have the Ubuntu repos and the Pinguy repo.
I appologize if this has already been discussed but I couldn't find it.