Pat Forde had an interesting piece on the effect of realignment on each conference a couple weeks ago. Basically, what he says about the MAC is contrary to the old adage that if you're standing still, you're falling behind. Some of it may be a bit sarcastic, but he seems to think the MAC is ok as it is, although the picture of Ohio vs UMass in a nearly-empty Gillette Stadium wouldn't support that (my apologies if this has been posted before):
MID-AMERICAN

Massachusett's first season of FBS play in the MAC is basically summed up with this picture. (AP)
Who left: Nobody. The MAC is doing just fine heading into Year Two without Temple, which put in five seasons with the league before reuniting with the Big East/American Athletic Conference.
Who arrived: Nobody. Massachusetts hopes its second season of FBS competition goes better than last year’s 1-11 face plant.
What’s still to come: Nothing but another 13-team season of good, old MAC-tion.
Better or worse? The same, though it will be hard for the league to replicate the success enjoyed by Northern Illinois and Kent State (a combined 23-5 last year). Both lost their coaches to bigger jobs, which is the nature of things in the MAC.
Winner or loser? The MAC has won by being able to largely stand still. The fluctuations of sun belt schools (including several Sun Belt Conference schools) have not affected the old Midwestern league much. There’s something to be said for relative stability.