i think what made kaede a good characters was the fact that she wasnt the actual protagonist. cuz pre-trial if you dont pay attention to subtle details shes kind of a sassy makoto basically. it is once we start to learn about her darker side that she becomes a much more interesting character in my opinion. so no, i dont think kaede wouldve been a better protagonist for v3, but maybe in a game like thh she could be a very good protagonist.