Since there is IIRC a version of this game in webcode is there a possibility you could put that webcode version behind a paywall with all premium features unlocked so those of us who are on MacOS and got the game in the bundle(and anyone in future) can enjoy 

That's something I plan on doing - I'd like to package EBF4 the same way I did EBF5, where you can just take out the .swf file.
BUT it's not going to happen any time soon, I've got a few other projects I want to finish before that.