Give greater prominence to a bullet list of identity federation benefits

[MartinFSmith]

The draft does a good job of identifying business benefits of identity federation, and provides a bullet list of them in Section 9. Conclusion & Other Considerations:

• The ability to consistently manage and understand risk across multiple organizations,
• The ability to limit organizational costs associated with managing individual identities,
• Streamlined user experience due to fewer credentials,
• The ability to scale and expand customer bases,
• The ability to provide more online services, and
• Increased ease of access to shared resources.

It might be more hard-hitting to move this list to the front of the draft.

Also, suggest a couple of additions to the list:

• Minimize the replication of users' PII across the Internet, reducing risk to users and liability of RPs
• Improve security by providing more-current access information (user attributes) to RPs and limiting risk of use of revoked or obsolete access privileges
• Federated SSO improves incentives for users to acquire a single high-quality credential to replace multiple passwords
• Improve the economics of ABAC by enabling re-use of user attribute data