That's the great thing about open source. If you are not satisfied with the free labour's pace of implementing a feature you want, you can do it yourself!
Yes, absolutely! I would probably just pick a version to fork, set it to v1.0.0 for your org's production path, and then you'd know the behavior would never change.
It's generally easier to just deal with breaking changes, since writing code is faster than gaining understanding and breaking changes in the external api are generally much better documented than internals.
