Palpatine's Risk
We know Palpatine's been working behind the scenes from the start to gain power. He even allowed himself to be kidnapped and revealed he was the Sith Lord to Anakin in ROTS.
Those are very risky moves on his part to influence certain events. How do you think he would've responded if he was caught off guard? What if Dooku had beat Anakin? What if Grievous had actually killed Anakin and Obi-wan when they were captured and brought to the Invisble Hand's deck?
I'm just wondering what you guys think he might do all of a sudden in order to protect himself, and thus negating his secret identity.