User has no idea of how much webspace he has left to assign
When you log in as customer, you can see the soft- and hard limit of your already assigned domains. But you have no idea of how much webspace is left for a not yet assigned domain.
This continues on the page "Add new website". You don't know how much webspace is left to be assigned.
Only solution at the moment: You well get the left space if you try to assign too much webspace to a new website.