Adywan & everyone on here,
I really think that you should leave the clone voice on Boba Fett, as it will not only tie in with the prequels, but it will also give Boba a link to his true Mandalorian origins (just like his Father's voice), he is after all a clone of his Father! His voice may have altered slightly as the years went by, so I suggest maybe Adywan mixing the two voices (original - before 2004 DVD voice version and prequel - 2004 DVD version) together to get a healthy balance of what would be a modern day Boba Fett voice.
What do you think?