Now on to what I think. Changes at all are discouraged when one likes the OT best, no matter what. If I agreed with that hypothesis of changes of any kind I would HAVE to agree. However, if I think some changes CAN be good, here we have a solid reason for a change. It is an audio clue to the audience, Boba Fett is Jango Fett's clone. And yes, I know, EU can explain the differences where the helmet has a voice modulator, but you have to admit, being able to listen to it (the Jango/Boba voice) and not ask the question I personally think is better then having to turn to something over what many people, especially non-EU, might look as a mistake, since they are physically the same person. Now if we all can step back and look at the changes themselves, not our dislike of GL or his policies being in the observation, I think a movie explanation that eliminates a question is better then having to think of an answer to a question created by the original (insert here).
Here is another example, pure logic of changes that COULD be made that actually help. (Yet again, not thinking over GL and what he is doing with the original versions). Anyway, in the cantina in ANH, Obi-Wan cuts off the arm of an alien with his lightsaber. We see the arm on the floor, open and bleeding. Now which is better, logic-wise. Seeing the scene like that and having to think up some explanation OR have the arm changed in the movie to one sitting on the floor cauterized, no blood or opening, and in watching you don't question itbecause it matches all the other lightsaber wounds?