Eh, not really feeling that suggestion too much. I know it's over a hundred days away, but it seems a bit too similar to what we're doing now. I like mixing up the theme weeks - so far we've had theme weeks pertaining to quality (bad), aspects of the song (vocals), titles (love), and now tone (evil), so it might be good to not do two "tones" in a row. That's just my thoughts though. Other people can weigh in.
Obviously I have no idea what this proposal was since I'm not one of the priveleged few, but if you've had quality, aspects, titles, and tone, maybe next you want to go for game function? I.e., boss music, town music, ending/credits music, map/travelling music...something to that effect. Obviously a lot of "functions" apply primarily to RPGs, but it would be a direction I don't believe you've taken a theme week yet. And it's also, imho, the most obvious one.