I missed the conversation while I was sleeping, but to add my 20c. I'd prefer Julia as a friend too. It's not that I don't like her, I don't know her and have made a connection as a player to a different girl. So I will be breaking up with Julia on my main path and I will feel like a total dick doing it, she has done nothing wrong and been a great help to my MC.
I will do a path for Julia, but it won't be one of my main ones.
I also don't mind if the path saves are broken and I have to redo them all again. It's one of those games you don't mind playing multiple times and discovering new things you have included that I missed the first time.
Otherwise, hair etc, don't change a thing unless it's what you want.
PS, if you do not change Julia's status, I won't lose sleep or bitch and moan about. It is what it is and I'll feel awful pressing that breakup button, but, definitely not worth screaming about it.