Disable warnings for a unit without having to add this to the ignore list

Currently, in order to ignore a unit you have to add it to the ignore list. This list is on a per project basis. Assuming a 3rd party unit that I don't want to be processed in any of my projects, I have to add and ignore entry it to all the projects. How about either
* Add a special comment to the unit source code:
unit blablb; //FI:ignore
* Have a configuration file in the directory where the unit resides that allows to change the FixInsight configuration for all files in that directory?
(or both)

(Yes, that's exactly how the GExperts code formatter works.)