I have a few small clients that would prefer to handle maintenance fees on their own They would like to just change the fee address, but that is not possible without a customer number. So, the customer number should be much easier to get (online - instant - which it should be anyway) so I can easily handle that for them, or the PTO should permit post issuance communication address to be changed to an regular address without need for a customer number.
I would also like to be able change all addresses associated with a client once I disengage from representation. In many instances this is at the time the patent issues. So, we should be able to give notice to the client and then withdraw as well as change all communication addresses to that of the client.