Currently if there are multiple (think 25+) instance of SQL Server in your environment that need to have Upgrade Advisor run on them, it must be run manually per instance which is a headache and takes much longer as it needs human intervention to baby-sit and run for each instance. When the number of instances is low, this is not an issue. When the number of instances are higher it becomes a time constrainst and elongates the time to run it on each instance.
I am proposing added functionality to the Upgrade Advisor 2012 and v.Next to have the ability to add servers to a list and have the upgrade advisor automatically (either by gui or command line) run through the added instances much like you can with most other MS tools.
I also propose having these tools include the functionality to query the CMS instance and retrieve a list of servers that can be checked or unchecked to quickly add them to the list.