Over here we've pretty much arrived at a consensus that some permutation (not in any particular order, it's been that close and crazy all season) of the following are the top four teams in the central region, with all four getting out:
Grinnell
St. Thomas
Luther
Nebraska Wesleyan
Wartburg has been hit by injuries and is a long shot. Carleton started strong, but looks like a very long shot right now.
I don't think anybody around here sees any of these teams on the podium at nationals. Clear AA candidates include Harren, Dobyns, Spencer, Wobeter, Brady, Umhoefer, Olin, Bennett, Theisen, Schrupp, Hubbard and maybe Wagaman if she's back from injury. After the first three names all of these look like a toss-up right now.
Don't know anything about the West except Willamette is out there and Zersan might win nationals--check her out.