Pro Sites Feature Request - Update credit card details

Hi There,
I have a feature request for Prosites - I think it's a great plugin and have just started using the stripe integration. My concern is that if a client changes their credit card details, their account will fail and they'll have to sign up again - which creates a new account under the same name within stripe.

What I think would be great would be the ability for users to update their card details, so if a payment should fail, they can amend it from their pro sites account page.

Do you think this will be possible?