[BlackJack]

Thanks for the population numbers, I didn't know they were so different. I just ranked them from (my perceived) livability - SLC close to skiing/nature, while Minneapolis/Ann Arbor are not destination cities like the other ones.

I think Seattle / Boston can be T1, but then you'd have too many T1s. My logic was "do lots of people want to move to this city?" and I think the answer is "no" compared to the demand for the T1s.

I see your logic though, and maybe it's better to just have a T1 and T2.

[seanmcdirmid]

Minneapolis is the biggest American metro between Chicago, Seattle, Dallas, and Phoenix. It basically anchors a huge amount of the country. SLC in contrast plays second fiddle to nearby (relatively speaking) Denver, Phoenix, and Las Vegas (at least it is bigger than Boise).

Ann Arbor is so small and close to Detroit, it is odd to hear it listed as a significant city in its own right (like Madison WI). Heck, they are about the same close-ish distance away from Toledo, and Toledo is much bigger than Ann Arbor.