I think we strayed too far from the original discussion, especially considering the multiple definitions of "authorial intent" that have been going around the Shalka thread.
When can authorial intent be given, and by whom?
With that being said, our current rules are vague when it comes to crossovers. The Blake's 7 thread was (is?) a mess of interpretations because of that - I'm considering making a separate thread about crossover validity at some point, though probably not until after the other inclusion debates are settled.