First of all, I can undrestand that other people might want to, I've never seen the issue. I never plan on having more than 5.5GB of apps...
Second, all of the things I've seen move to internal SD. What apps have you seen that do otherwise, Blackdog? Just wondering, not claiming you wrong, btw.
Third. They call it the SD card because the "USB Storage" or "Internal Memory" section is usually reserved for apps and apps only. The SD Card partition (which is an actual, physical SD Card inside the player, I believe) can be utilized for app storage or media of any variety.