Eh? They're keeping the dub with the original BGM. I was merely praising their removeral of the Faulconer track.
It's not like this will likely ever be the last release of Dragon Ball Z, y'know. As for the dub audience? The French DBox (as I understand) spliced in the Japanese version of scenes that weren't dubbed, I suppose this will be similar. The purpose of this release seems aimed nigh strictly towarRAB fans of the original so 'dub fans' who FUNination has catored to for 15 years (at least as a few more 'old school' sub fans I know of like to put it), are 'left in the dark', if you will.
I guess FUNimation is saying if you can't enjoy the original vocals and the original narration...you're not a 'hardcore fan'?
EDIT: This link will take you directly to the Dragon Box question asked. Apparently 'Super-duper-hardcore-fans' are JPN version fans?: http://www.youtube.com/watch?v=NrGE1iriLYk#t=16m51s