Will developers have to alter their applications' !Run files to correctly load a C99-capable SCL, or are they fine as they stand? If StubsG isn't used?
What does it mean to (not) 'play the version numbers game'? Certainly, Castle and A6 shouldn't have competing version-number schemes - that renders them useless. Even if they had different implementations, they could still agree on which versions introduce which functionality, couldn't they?