Deletion of List of Blake's 7 planets

Comment: At the risk of sounding y, this is a bit of a  issue, I think. ''Blake's 7'' is obscure now, but that doesn't make it any less valid a  than, say, List of Firefly planets and moons would be. What's needed here is sourcing and trimming, and |AfD is not for cleanup; if what's left after sourcing and trimming wouldn't be  in the main article, it can be ly merged there then
Stance: keep
Cited policy: Wikipedia:Arguments to avoid in deletion discussions (WP:OTHERSTUFF||WP:CSB||WP:SPINOUT||WP:NOTCLEANUP||WP:UNDUE||WP:BOLD)