Elements to go into a splash page:

• Identity communication 
  • user's name
  • trusted info about the user
  • identity url
• 3rd party info
  • icon
  • site name and url
  • brief description
• permission scoping (either informative or dynamic)
  • informative = telling the user what is being shared
  • dynamic = giving the user choice over what is going to be shared
• option to switch out ("not user x?")
• User education (general explanation of what delegated ID is/what is about to happen)
• option to stay signed in to the 3rd party
• IDP legalese
• 3rd party TOU injection
• confirmation!