Supply and demand. There are far more small senior and small coed teams than any of the other divisions. I do wish they would be more equitable and give the International divisions more of an opportunity to get bids, but I don't see the small division getting more bids on average than the other senior divisions.
I have no problem with the number of bids given. I think for the past few years the truly tragic, scary teams are few and far between. The preliminary division was a great decision by USASF. You give teams who may not be as competitive the opportunity to compete and gain experience on an entirely separate day without interfering with the more competitive teams.