Hmm... Yeah, that shouldn't be TOO hard to do. Speaking from memory, though, as it's been a while since I've messed with the mod. In theory, at least, I should be able expand the exclusion list check with an extra mod setting. Although, it might be simpler to leave the exclude list as-is (since I don't want to nuke people's settings) and add an include list as a separate thing. That way, you can both exclude some things AND include others, without making one or the other. Probably make the exclusions override the inclusions, in case someone for some reason puts the same recipe in both lists.
I need to think about this, and also find time to mess with it. So no deadline I can offer, but it's a good excuse to give Factorio another look.