I've enjoyed the first two episodes, for many of the same reasons already stated.
If only they would tone down the battle droid slapstick. They are more annoying now than they ever were in the prequels!
I've long presumed Order 66 is some sort of deep subconscious brainwashing thing ala "The Manchurian Candidate". The clones simply can't disobey it.
How the hell Order 66 was programmed into an Army bought and paid for by an alleged Jedi is anyone's guess. I don't think the Kaminoans would do it without asking a lot of questions, and Palpy can't possibly have met every clone personally...