What is the semantic difference between left nav and the site selector? Should they be merged?
The new left nav includes a mix of site-specific stuff (tags, users) and teams. Teams are implemented as being site-specific, but from the beginning some of us have asked about (actual) teams that cross sites. You could imagine a team having a presence on SO and DBA and Server Fault, for example. Right now only SO gets teams, but if that expands beyond SO you're not going to want that group of people to need to go make three different SE teams.
Logically speaking, a team is a mini-site, not a subset of a site. Navigating between SO and a team is like navigating between sites.
Which raises the question of how this site selector is different from all other site selectors the site selector we already have.
Does it make sense to unify them? In fact, wasn't Jobs (then called Careers, I think) in the site selector on SO at one time?
This is a question, not a proposal. There's probably some piece of design intent or information architecture that I'm missing, that would make this all clear and logical if only I had that clue. If so, I'd like to learn it.