Should we add a tag for dynamics processing, and drop the normalizing and compression (except for audio codecs)?
I wouldn't drop any of them for the following reason:
I think a good thumb rule we should use is to try to choose the most generic tag that your question still applies too. If the question is applies to both
compression then it could be tagged
dynamics-processing, if the question only applies to
normalizing and not to
compression then the more specific tag
normalizing would be a better choice...