Although it contradicts the length of this post, I'd actually be happy with "just" most current fansubs being on:
- very high: nearly none, "reserved" for dvd-source-rereleases
- high: most
- medium: some
- low: few, mainly new groups with trouble or files which are subject to a v2.

A suggestion:
- unknown - You haven't watched the file yet or can't tell by your impression of previous files. Make sure to add the quality-rating once you've watched it!
very high - No issues at all. Video, sound and subtitles are exactly the way they should be.
high - There are minor issues with this, like very few visible encoding artifacts - maybe just in one particular scene or slight translation/editing-errors.
medium - One can clearly spot encoding issues in video or sound, or the translation is off or even missing (e.g. signs) sometimes.
low - There's a permanent annoyance in video, audio or translation.
very low - This is not quite what one would want to watch. The video, sound or translation are just disturbingly bad.
corrupted - Used for files with clearly visible corruptions.
eyecancer - Avoid this file. It can't get worse than this.
[ *)Could be solved by offering sample-pictures for each quality. ]
Other issues related to quality, like missing song-translations (inbetween or OP/ED) or bad typesetting could be summarized with a passage like: "When there's another major issue (like A or B) while the file would otherwise qualify for a higher quality, downrate it by one step."
Opinions?
