I want to emphasize again that I do not know all of the intricacies that people have mentioned here RE: placing protected seeds in a given region, such as how they sort teams by the overall seed lines. The only point of this post is to show that since 2000, there have been plenty of examples of a "better" protected seed getting placed in a region that is more advantageous for a "worse" protected seed. I would obviously assume that these placements followed the other rules/guidelines that have been mentioned here, I am simply showing that IF it worked out as far as other factors, the Committee wouldn't not put #1 Michigan in Chicago with #2 Illinois simply BECAUSE we'd like the placement even more. In other words, they are not against "screwing over" a better protected seed, as long as it makes sense with the rest of their rules and the overall bracket.
A quick overview of four parameters I'm using here:
1) I am only looking at protected seeds, which are seeds #1-4. I am assuming placements beyond that simply have to do with "making the bracket work" and were not specifically looking at geography.
2) I am only looking at the Regionals (i.e., Sweet Sixteen and Elite Eight locations). Since teams can be at the same First Weekend site and be in different parts of the broader bracket, that is not the point here.
3) I am trying to limit this to clear examples that would be closer to us being placed in Chicago with a better seed Michigan. For example, #3 Boston College got put in Philadelphia with #1 Duke ... big deal, lol, Duke has a lot of fans in the Northeast, and the driving distances aren't that different.
4) I am ignoring examples where two protected seeds really like the location, but it is still better for the higher seed. For example, #2 Michigan State was put in Indianapolis in 2009, but #1 Louisville would have viewed that as just as good of a location for their fans, if not better.
So, since 2000, these are examples of a #1/2/3 seed getting placed with a #2/3/4 seed where the "worse" seed has a noticeably better example. As with the last time I did it, the "better" seed that is being sort of screwed over is in red, and the "worse" seed that theoretically got lucky are in green.
2002
Syracuse, NY (East)
#1 Maryland
#2 UConn
#3 Georgia
#4 Kentucky
Madison, WI (Midwest)
#1 Kansas
#2 Oregon
#3 Mississippi State
#4 Illinois
2003
Albany, NY (East)
#1 Oklahoma
#2 Georgia
#3 Syracuse
#4 Louisville
Minneapolis, MN (Midwest)
#1 Kentucky
#2 Pitt
#3 Marquette
#4 Dayton
2004
St. Louis, MO
#1 Kentucky
#2 Gonzaga
#3 Georgia Tech
#4 Kansas
2005
Syracuse, NY
#1 North Carolina
#2 UConn
#3 Kansas
#4 Florida
2007
San Antonio, TX (South)
#1 Ohio State
#2 Memphis
#3 Texas A&M
#4 Virginia
2008
Houston, TX (South)
#1 Memphis
#2 Texas
#3 Stanford
#4 Pitt
2010
Houston, TX (South)
#1 Duke
#2 Villanova
#3 Baylor
#4 Purdue
2011
Newark, NJ (East)
#1 Ohio State
#2 North Carolina
#3 Syracuse
#4 Kentucky
Anaheim, CA (West)
#1 Duke
#2 San Diego State
#3 UConn
#4 Texas
2012
St. Louis, MO (Midwest)
#1 North Carolina
#2 Kansas
#3 Georgetown
#4 Michigan
2014
Anaheim, CA (West)
#1 Arizona
#2 Wisconsin
#3 Creighton
#4 San Diego State
Indianapolis, IN (Midwest)
#1 Wichita State
#2 Michigan
#3 Duke
#4 Louisville
2016
Chicago, IL (Midwest)
#1 Virginia
#2 Michigan State
#3 Utah
#4 Iowa State (this could have been green, too)
2019
Washington, DC (East)
#1 Duke
#2 Michigan State
#3 LSU
#4 Virginia Tech
Louisville, KY (South)
#1 Virginia
#2 Tennessee
#3 Purdue
#4 Kansas State
Kansas City, MO (Midwest)
#1 North Carolina
#2 Kentucky
#3 Houston
#4 Kansas
2022
Chicago, IL (Midwest)
#1 Kansas
#2 Auburn
#3 Wisconsin
#4 Providence
2025
Indianapolis, IN (Midwest)
#1 Houston
#2 Tennessee
#3 Kentucky
#4 Purdue
TL;DR
Once again, this is not saying anything about the non-geographic reasons for why a #2/3/4 seed Illini team would be shipped somewhere else besides Chicago. It is simply making the point that it certainly doesn't seem like the Committee ever uses the logic of, "We don't want to screw over a #1 seed Michigan by putting them in Chicago with #2 seed Illinois!" I get the impression that at that point, the Committee's done their best to protect all protected seeds, and you can only do so much when it comes to a potential Elite Eight matchup.
Plus, and this is just my own conjecture ... I do think they want to sell tickets. At the expense of the integrity of the bracket?? No. However, if it doesn't mess anything else up? Yeah, I think they'd prefer to have a top 3 seed Illinois team going through St. Louis and Chicago.