Hey there, thanks a lot for asking and sorry for the late reply! I'm afraid we would be prefer to not license this work under another or a second license, but stick with the current one. Sorry!
Another possibility I could think of would be to create new assets for your project based on the assets in the Generator. Unfortunately though, I'm afraid I don't have enough time to work on something like that at the moment, as I am currently very busy with school stuff. Again, I'm super sorry I can't really help you right now.
Maybe we could work together on something in the future?
Again, thanks a lot for asking and I wish you the best of luck with your project nonetheless! :)