For searching purposes, I think it's better the way it is. If the problem doesn't involve an iPod, you can limit your search to something basic like "iTunes" in the main software forum. But chances are that every other post in the iPod board would be about iTunes to some degree, which would kill the signal-to-noise ratio of anyone searching for non-iPod-related iTunes help.
You can't have an iPod without iTunes (at least not practically), but the reverse is hardly the case. I've been using iTunes for years, but I've never even touched an iPod.