Customer feedback & Ideas for IRIS

It would be really useful to have a 'date client added' column in the client list.  This would help us when tidying up our client list and deleting those clients who have never registered.  At the moment when you sort by status to find all the unregistered clients, you have no way of telling which ones have only recently been sent a registration and which ones have been on their for ages and need deleting to maximum the space available.