We do maintenance by class of server (DEV, QA PRD) and update an entire group during one maintenance window. It would be nice to be able to select a group like "Production" and set one maintenance window instead of setting it for each server. And since we do maintenance on the second Sunday for one group and the third Sunday for another we can't set a window and forget it. We have to set it before the weekend there will be work done and then clear it on the following Monday. More scheduling flexibility would be a wonderful addition.