No. That's what Night of Champions is for. And quite frankly, something like Undertaker vs Shawn Michaels, despite having no titles on the line is obviously far more meaningful than something involving Michelle McCool or something. That's the worst possible example I could give but still, some title matches would just take up air-time and wouldn't really be Mania caliber matches. And since there is like 8 titles, it wouldn't leave much room for anything else anyway.