He also thanks Lucas for not ruining Han Solo by shoe-horning him into the film (like poor Chewbacca). And then he imagines what the young Han Solo action figure would have been:
(The babies are Luke and Leia.)
I would say the most disappointing aspect of Revenge of the Sith was that the design was so weak. I can't think of a single vehicle, character, or setting introduced in that movie that was special. In fact, Grievous was a tremendous disappointment after being so interesting in the Tartakovsky cartoons.
*Buy Polish Star Wars posters art eBay.