I take it you are referring to the $hf_mig$ folder here? Has there been any thought given to tweaking the Hotfix Uninstaller cleaning to use this logic:
* IE Uninstaller Cleaner, WMP Uninstaller Cleaner option remove associated folders for those apps
Or some such other differentiation method?
I'm from the WMP team and have talked with the IE team about ways to short-circuit or break your detection logic, but all the options there just make me sad and think that's not the right thing for the customer. On the other hand, it's excruciating to users when a rollback/restore fails, so ... I really would like something to change for the better here. We should get on the same page so that people who don't want to be using the beta anymore aren't stuck with it accidentally. It's been way way way too easy for users to get accidentally broken by the Hotfix Uninstaller option.