Nice PrC.
Your table doesn't match with the description of the abilities: it says that a Rat-a-tat gains 'Talk the talk' at 7th level, while the description says 5th level.
Also, I love these names for the abilities.
Edit: What kind of save is needed for 'the rumours of my death were greatly exaggerated'? Will save, or a nameless save without any bonus? Anyhow, it's kind of confusingly worded.