Great work 
Related: Since we’ve had a big push with writing guidelines lately, so I’ll share this nerdy MeB detail:
We have a writing styleguide!
So if anyone is ever wondering whether to use US or UK English, whether to use colons or semi-colons, how to format lists, and so on, check it out. (these guidelines are not for MB data, artist, annotations, but for MeB docs/documentation or website text)
We don’t require wiki pages to follow any of this, so no stress, but some may prefer guidance on these matters : )
Maybe:
If none of the above apply, we usually do not create additional digital media releases on the basis of:
The cover art section also stood out to me. I would change the emphasis to be towards creating new releases for different cover art. So ‘Entirely different cover art’ becomes ‘Different cover art’. And its counterpart becomes 'Minor differences in cover art. Differences in image quality/size, format and color correction may not justify a new release."
Because merging is easier than splitting. Something like color correction could certainly be egregious enough for someone to want to split it. I’ve replaced ‘resolution’ with ‘quality/size’ because resolution could be interpreted as, for instance, square vs non square images being the same release, which probably should be separated? Or is that another forum thread/discussion to be had…
I don’t know about saying that PDF booklets (which I would define here as ‘digital extras’) automatically don’t count. There’s been a bit of feedback on that forum thread, but no consensus that I can see. Since people tend to grab the guidelines and sprint with them I would be cautious and leave it out for now - otherwise a lot of releases are going to get merged and people are going to get upset (not everyone reads the forums).