First off, I did just iterate the "Power Rankings" for the Hex I've got. Here's how the table looks.
Interestingly, you'll note Costa Rica and the US are tied, while Mexico and Honduras are tied. At this point I don't think there's much question that the US and Costa Rica should hit the auto-qualify spots, the only question may be in what order do they do it.
The bigger race, of course, will be Honduras and Mexico. I think Mexico has the harder schedule, playing teams #1 and #2 away. Sooooo, if we wanted to make predictions, I'd go out and say that Costa Rica, the US, and Honduras auto-advance and Mexico wins up in the #4 spot playing (and probably beating) New Zealand.
The bigger pill, of course, is the falling of Mexico. Now, is a weak Mexico good for CONCACAF? Objectively, I'd argue no, we want a Federation full of strong teams and with 4 slots to potentially fill, I think Mexico has a much better chance of beating New Zealand than either Panamda or Jamaica. But as a USMNT? Let Mexico crash and burn. That's what a rivarly is.
He's a chart illustrating performance over the last 7 matches. Actually goes back a little further than that, including qualifying in past rounds and Gold Cup performances. Basically, this is rankings over the last 9 "ranking periods", covering a total of 13 games played.