The waiting list is useful and looks great but I was wondering if somehow you can add sortable columns with the following fields or similar:
1. "Contact Made/Awaiting Response or Enrolment/Response Required" - I go to the waiting list daily and try and keep on top of it but am finding that I lose track of where I was up to and end up going to and fro between the Waiting List and the Contacts to see who I have emailed or called (we make use of the Notes field to record verbal/postal conversations). Perhaps utilise the same colour coding you have for the number of enrolments in a class to the titles above.
2. An "Urgency" flag column with a timer-based alert field that links to a waiting list entry's last date of activity and that increases in urgency the longer the last response was. For example, I dont want to keep my potential clients waiting for a response longer than two weeks so initially for the first 2 days they may have a green flag, then an amber flag for the next days 3-7 and a red flag for days 8-14.