In a tournament, stratification and seeding are done by total lifetime masterpoints. This system works okay, not great, because masterpoints are a reasonable measure of ability. But the ACBL has two very clever compensations. In a stratiflighted field, there could be a very good B player who wants to play in the A field. That player is allowed to -- it is an A/X field and anyone can play as an X. Second, suppose an older player who has accumulated a lot of masterpoints does not want to play in the A field. There is usually a Senior field for that player to play in.
So the players in A/X are there mostly because they want to be there, and the players in B/C and Senior Pairs are there because they want to be.
Consider a young team with very good players, who want to play against the best in a bracketed knockout. They don't deserve to play in a bracket with teams better than they are, but they do deserve to play against teams of equal ability. If they are very good, they might deserve to play in the top bracket. However, because they are young, they would not have the masterpoints to naturally be placed in that bracket.
Apparently, the director has the discretion to put them in a higher bracket if they request it, but directors aren't always willing to do that.
Only a few players have this problem. However, they include the players who eventually are going to be representing ACBL-land in international competition. So it would seem to be important to address their problelm.
Perhaps it could be part of policy that teams which can document being better than their lifetime masterpoint total should, on request, be credited with masterpoint totals equivalent to their ability and then bracketed and seeded accordingly. This documentation could be recommendations from directors, their placings in bracketed knockouts in the past year, or masterpoints won in the last year.