The options in List Builders empower users but can make it hard to support those users if they have questions. Returning the list to a default state would make support easier.
Nice to have: Define other named lists in the spec that could control filter parameters, default sorting, and columns. This would allow you to define something like a 'Most recent gifts' list that would sort things by date entered (DESC) and a 'Largest gifts' list by amount (DESC). While the capability to do this is available to each user this would let you roll out mini-reports in one list builder to all users.