Sure.

To me, for a character to go through a redesign (or any design in general), it has to be an external representation of their character and what they go through in the story that enhances them. Jaune may have a new hairstyle, as well as a cool looking new design. There's little harm in that.

But, as someone who gave up after V6 (me), how can I expect them to do something impactful and payed-off while having this newer design, if they didn't in his other new design?

To me, it comes off as a rushed or fake/stale development.