I like it because it would be a way to return the mystique back to the character (as long as they don't tell us anything about him). Unmasking Boba Fett and showing him as a kid was one of the stupidest things Lucas ever did. He never understood why people liked him in the first place.
Boba Fett works perfectly as a Clint Eastwood/Man-with-no-name type of character. (They even added a sound effect of spurs jingling when he walked in ESB). So they have to find a way to give the "coolness factor" back to Fett.
I dont know, maybe they could just pretend the prequels never happened, but this sounds like a pretty decent way to do it.