Along the same lines as default content for new post and default name for new post it would be helpful if the default web edit page provided a gui for managing tags. Being able to manage tags directly via the text box is wonderful, but having a dropdown box of available tags can be very helpful in a couple of ways:

As with default content for new post I understand that this falls into a bit of a funny space because making changes via svn would bypass this functionality but I given that the web seems to be the way most non-admin changes are made, it still seems a valuable addition for encouraging people to accurately tag content.

MoinMoin has a simple implementation of this, click here to see an example.

--AdamShand