Instead by mistake creating custom fields in the wrong order and having to delete them, we could have a edit panel and edit the order of the custom fields in the Opportunity details ( when we open a contact in the opportunity).

Would save a lot of time and efficiency by just editing the order ( not actually editing the custom field, the order of the custom fields).

For example: by mistake i put adress -> email -> postal code - in this situation, email is in the middle of 2 informations that look better together, so we could edit the order to make, for example: email -> address -> postal code.