Proponents of a hypothetical power-conference-only NCAA tournament make a reasonable case. In theory, by stripping Division I's widely disparate conferences of their guaranteed automatic bids, and focusing instead on selecting the best 64 teams in the country, the entire bracket would be more talented, and more competitive, from start to finish.
This is usually the part where we enumerate the myriad problems with this idea. Instead, we'll just give you a name: Dexter Werner.