Well, I do not want to wave a flag claiming that "winnow(ing) by natural attrition" is the only way to go but the program I direct may have distinctions that are material. Certainly a difference between my public university and Notre Dame may be that I operate with some obligation to teach "all-comers." The great majority in my program start with it as a three-credit academic course with the possibility of securing nine credits over the longer term. (Last Fall, I taught a Freshman Seminar which would make the total 12 credits.)
Our regs say that if we pay for part of program expenses through some funds, the activity is expected to be available to all interested students - which I narrow necessarily adding "undergraduate."
What I have called "natural attrition" essentially has meant that we can field two teams a season although I coached three in 1991-1992 and reached three this Spring. (I moved from the Department of Communication to the Department of Political Science in the Fall of 2006 and there seems no question that interest has perked up since I got closer to the larger numbers of pre-laws in the DPS.)
Yes, that is quite different. And a very significant restraint on Notre Dame is the coach's availability. Unless things have changed, Bill drives in from Chicago once a week to teach a class, which is when the whole team gets together (and additional times for scrimmages and such as we approach tournaments, of course). There are certainly restraints on his time and on the number of students that he can teach, and that limits who we can take. While I was there, we did four teams in one of his years as coach, but that was mostly because graduation would have gutted the program had we not taken in more students than we normally do. His preference was generally for three teams, it made things more manageable.
Not that auditioning people was purely a class size issue, but if Bill had been willing to field another team or if we had someone on campus who taught a mock trial course for all interested students, regardless of whether they'd eventually compete, we could have taken a lot more people.
Of course, Golden Skull's one-way street to national contender status is not the super highway I would care to travel but it appears that our difference lies in what we think we can learn from auditioning. I admit that I have seen my share of students who have not impressed me at all in initial practices but have bloomed over time. I guess I would permit the possibility of a bloom recognizing that even "national contender" programs do not translate into requiring every team to be an instant national contender.
Today, AMTA effectively permits one ten-person team plus five more up to eight. That's 50 and I need to worry about those kind of numbers only when more than 50 have interest.
Certainly not every person is required to be an instant national contender, but we certainly looked for people who had a lot of potential and could be competitive that year. I think that's part of the reason that for so many years there were ND sweeps in South Bend: strong freshman teams finishing 3rd or 4th.
But I think you really can tell a lot from auditioning people. You get a sense for their communication skills, their presence, their analytical skills, and how motivated they are. You also get a feel for whether they have MT experience, which helps (but was in no way a prerequisite). It's certainly possible that people would bloom over time, but I think auditioning lets you make the best decisions based on the information you have on hand right then.
I also recognize some irony in my position. I came to be strongly in favor of auditioning and taking the best to improve the talent and competitive level of the team, but I was a late bloomer myself. I gave a horrible audition and was put on the all-freshman "D" team, and this was all pre-Bill. If I had judged a freshman giving that same audition, I probably would have voted not to take him. And yet, I feel like I did pretty well for myself during my time in mock trial. So, what can you do. It's not like auditions are infallible.