You know I'd rather have a young Han cameo than keep young Boba in AOTC.
We already have a young Chewie cameo which was pretty daft when you think about it so extending that to some dark haired human kid hiding in a tent...worse things could happen. Seeing Jedi taken out by men with guns could explain his attitude to the Force in ANH (not that it needs an explanation or anything).
But this post sums up my Fett feelings.