Imperial Army Formation
Ever since I first saw Episode III, I have wondered about Palpatine's decision on what the army of the Empire was to be. My thought is that, since he had both the droid and clone armies, he could have easily combined the two into a single army which would have been far superior to that of the Rebel Alliance (although he hadn't foreseen any rebellion when he came to power).
Aside from remaining in line with the OT, for what reason did Palpatine not include droids in the Imperial Army?