In 64 and in Melee, his design is/based in Star Fox 64, and in Brawl it's based in the one from Command, it may or may be not based on star fox games, but the designs are from these game anyway. I do like the command design, but fox doesn't look like a Fox in the Command design.
But I do say, that having the work to change whole character animations that don't interfere in the gameplay or make a vertex hack official just because people want the character to look like Melee is silly. As long the gameplay feels like the original, I don't see a point other than wanting extra work or personal satisfaction to change an idle animation or other minor things. Such as sound effects.
But still, I would not complain if they change these things because I prefer SF64 Fox, as I said, I like the command design, but just like it. But all these things should be optional, as the sound effects will be.
All of this, IMO, of course
Let us not discuss about this anyway, it's an issue for the BR, this may have been already discussed too much