I have many different plans for this idea, but due to my laziess and having to mute the "1-2-1-2-3-4" SFX in the "Backing" files I have decided to upload a "studio" version of a Rock Band remix (there are about 15) every once-in-a-while. Followers, get ready.
The first one is I Want To Break Free, with more spacey synths and some other surpises. It's a pretty neat mix to listen to.
I have decided to finaliise mixes to all the songs where I could find the proper Rock Band stems on remixpacks.ru (with PiotreQ hosting alternate sources) this morning. Here's Killer Queen, with a cleverly-re-edited intro and a different outro.