So, you don't like the College World Series format or March Madness format?
Unfortunately, baseball is not a universal Division I sport because many colleges have been forced to drop baseball because of Title IX. As for structure, I prefer best of 3 for baseball to double elimination. In basketball, I like much of March Madness. I love the fact that the championship is decided on the court.
But I'm not a big fan of conference tournaments and/or awarding automatic NCAA bids to conference tournament champs. Theoretically, a team could finish 0-26 in the regular season, win 3 games in the conference tourney, get a bogus NCAA bid and keep a bubble team out. The seeding of the NCAA basketball tournament has also been extremely suspect - last year in particular.
Still, despite its flaws, March Madness is still the best sports championship around.