I agree that the English dub of GT should be thrown into the fires of hell, but that's not really the issue at hand. Pan was very poorly written with no character growth to speak of and existed purely as a damsel in distress for Goku to come rescue. Everything she accomplished in the series revolved around Goku. There was not one singular instance where she saved the day on her own.Pan was only obnoxious in the English Dub of GT.
Keep her as a child and show some character progress. This movie could be a great jumping off point for that very idea. Leading into the end of Z during the Budokai and beyond! They can quite easily fix what Toei did to her back in the 90's.I agree with the guy's idea honestly. Probably the best and safest way of fixing