@otto42: Could you add in a menu under the header to the spinoff of p2 you are running for the make sites? Working on a new theme for make sites in general, but in the meantime this would make it easier for teams to use a custom menu to organize stuff without adding more noise to the sidebar.
They added a menu like this to Mike Admas’s team’s p2 at Automattic:

Tacked on top of content area like that and just using the standard colors/fonts already in this theme would be great.
p.s. autocomplete for author mentions doesn’t seem to be working?