Speaking as a parent, if I'm allowed to say something, is that it would be very helpful to have available more practice papers for the NSAA test. This is something I saw most applicants mentioned, and I feel it was very stressful.
Another thing is to allow more time for travel planning, especially for applicants coming from other countries. Travel fare and accomodation is rather expensive and when you learn if you qualified for interviews 10 days before, it's both frustrating and expensive. I've seen that other Universities provide a choice of dates and they let you know at least a month ahead. I should mention that we were offered accomodation for one day, but it was of no use as flights available did not allow it.
I should also mention, that it would be great if applicants would be available to other colleges for interviews, as it is the case with Oxford. This would enhance the pooling process and provide a fair chance to applicants towards other colleges, and allow other colleges to have a clear picture themselves of the applicants, in order to "fish" an applicant from the pool.