Use release disambiguation not release-group disambiguation and more

I found 2 examples why I would prefer the release disambiguation:
  http://musicbrainz.org/release-group/d3f057b4-7e89-3018-9f84-9835ed9b4732
  http://musicbrainz.org/release-group/6792b6d1-4e65-3c3c-9d20-d08aa1dcfc60
I did not find an example where the release-group disambiguation would be important (of course, that doesn't prove anything ;))

In release candiate list:
  Prefix media with number of media if >1 (e.g. 2xCD, 3xVinyl...) and show MBs disambiguation if set.

Examples:

Candidates:
1. Aphrodite's Child - 666 \[Vertigo, 1972, 2xVinyl\] (64.5%)
2. Aphrodite's Child - 666 \[Vertigo, 1972, 2xCD\] (64.5%)
3. Aphrodite's Child - End of the World / It's Five O'Clock / 666 \[2000 FruitGum, 2004, 2xCD\] (40.3%) (partial match!)

Candidates:
1. Pink Floyd - The Piper at the Gates of Dawn \[1967, 12" Vinyl, mono mix\] (51.8%)
2. Pink Floyd - The Piper at the Gates of Dawn \[EMI Records, 1967, CD, mono mix\] (51.8%)
3. Pink Floyd - The Piper at the Gates of Dawn \[Columbia Records, 1967, Vinyl, mono mix\] (51.8%)
4. Pink Floyd - The Piper at the Gates of Dawn \[東芝EMI, 1967, CD\] (47.8%)
5. Pink Floyd - The Piper at the Gates of Dawn \[EMI Music Japan, 1967, CD\] (47.8%)