You are most certainly welcome @abbecain
I wish I could be of more help on this topic, but I have not recovered to many banned accounts in my history. Input from some others would be great on this subject
Yes, there is a higher chance of them not getting back to you. This is why the spamming Instagram method lowers those chances.
I am unsure of why Instagram requires you to hold a picture unless they record what you look like. If they are recording what you look like, they would only be able to confirm if you have other accounts if their are foot prints (both accounts in question are on the same proxy, share the same link, phone number, email, or any other likable pieces of information)
...its not like they have facial recognition.... or at least we all hope
Since you are a girl, there are so many different ways you can apply your makeup and hair to look like a completely different person Im a guy and have much less things that I can do haha. If you were to see the collection of pictures I have sent Instagram trying to look like a different person you would crack up laughing for hours.
As far as a concrete reply goes, I honestly do not have enough knowledge on this topic