Economically, the MAC is in probably the most precarious situation.
Average MAC attendance is #10 out of 10 I-FBS football conferences at only 15,538 per game; well below the Sun Belt. CMU has the largest stadium in the MAC, and it only holds 30.5K fans. Most MAC schools aren’t in large TV markets, and/or are located in markets where B1G schools dominate TV ratings and media coverage.
Their fan bases and regional followings are very small.
As far as talent goes, in the most recent NFL draft, NCAA Division II and III produced more draft picks than the ENTIRE MAC. When it comes to Division I-FBS college football, the MAC is absolutely ROCK bottom.
ALL MAC schools count on playing at least two P5 teams (usually B1G teams on the road) annually and (usually) getting the crap kicked out of them for the money in order to help manage their finances.
With the B1G bowing out…that conference risks financial ruin. In other sports, the MAC is also relatively low profile. They are usually a one bid conference in men’s basketball, with the one bid going to the conference tourney winner. Mid-Major at best. A lot of small “cracker box” type venues as well. That holds true for most of the “olympic” and women’s sports also.
About the only sport where the MAC would be considered a top conference is in wrestling, and that’s in part because they have some schools from other conferences (like Top Ten Missouri from the SEC and some PA schools whose only Division I sport is wrestling) that are “affiliate” members for only that one sport.