As instructed, I did not remove or add any component before/during the slipstream process.  It was a straight-through slipstream without doing anything additional.  I have just reinstalled WITHOUT the slipstream, and then update the SP1 manually.  I can now see all of the Ultimate Extras (BitLocker, EFS, Hold Em Poker, DreamScene).  The Windows Features in Programs and Features is also available as normal.