Here's how I've always viewed conference tournaments in relation to the NCAA tournament...
The whole idea of an "ideal" bracket is to have the best games possible. Yeah, it kinda stinks for a team in a one bid conference to finish first in the regular season and then lose in the conference tournament. But if the automatic bid from the league is going to be a 13 seed, for instance, you want that team to be playing as well as anyone going into the tournament with a proven chance to be competitive with the 4 seed - well, the team that wins 3 games in 3 days is that team, not the one that spits the bit in the conference tournament.
See, also, Kemba Walker's 11 game winning streak.
That's why seeds move up or down based on conference tournament results, etc.
I mean, there are people on X now clamoring for Belmont to get in instead of teams like Indiana, Auburn, etc. They did the exact opposite getting blown out in the first round as the #1 seed to a 13-20 Drake team. Why on earth would you think Belmont can win or compete in a game in the big tournament after that ?