brett,
hmm, what you said is kinda true, but at the same time, you dont want the listener to have to keep going to his hi-fi and turning it up and down. you have to think about the song following the ballad aswell. is it going to jump out too much due to dramitic volume changes? basically, when i master, most of the time, i will usually ease compression (or not use it) on a ballad, to make it looser, and then the next upbeat song might have a tighter compression feeling. but i might not actaully change the overall level of the track, just the perception of it. does this make sense to you? btw, this is just an example! lol, i dont stick with these rules. my view of audio is that there are no rules as long as you are producing it. but there are sensible guidelines.