Have you monkey patched the Flex framework?

Have you modified the framework source for your own purposes on a production Flex application? If so I’d like to hear from you as we’re currently trying to understand where folks are making changes and the kind of impact they could have on applications with relation to our new cached framework strategy.

Please let me know the following:
1) What files (or at least what areas) have you patched
2) Is SWF size an important consideration for your app
3) Was patching really the only solution available to you
4) Are you comfortable creating RSLs

You can comment here or mail me: mchotin AT adobe DOT com.