The mix of faces in that scene was noticed by some the night the movie premiered... I looked in subsequent viewings and to me I'm just telling myself they're Jango Clones at various states. I have a very linear view of things right now though that I'm comfortable with.
I view it as the Clone Wars are just Jango Clones... Jango's are phased out then for recruits and by the time ANH rolls around there's no Clones in existance despite any EU to the contrary... My opinion may change to include some Clone Divisions (Not sentients mixed with Clones though, id on't like that concept), or divisions commanded by sentients in ranks only as low as non-com officers (Sergeants) or higher while Clones serve as the "Troopers" that take the orders.
Right now I'm sticking with there being no Clones in the classic era though, as per the Thrawn Trilogy where Cloning is actually the Imperial's Plan B incase the populace turns on them. To me though, the end of ROTS left me with the impression that the majority WANTED the Empire, even many aliens, and thoughts to the contrary were "unpatriotic". I rather liked that aspect of the film that gave me that impression.
It leaves that 20 or so year gap for the Empire to establish itself, and for those lines to be drawn where some people/species are starting to get the shaft because they cling to the ideals the Republic had that they liked... They maybe even supported the Empire's Creation at first, but the vast majority still support the EMpire and these people who are having their toes stepped on are (in galactic terms) a minority. It's a subtle thing that shows up in privatized business being infringed upon, or military conscription becoming rampant... It's good for many but some disagree.
And some people are just won over because the Empire does all the things it promises and maybe more, while the Republic didn't deliver. The Neimodians, for instance, get some punishment under the Empire and Naboo applauds the effort and sides with the Empire... At some point the Empire becomes bad to them for whatever reason (thus their celebration sequence), but at another time (I dn't view the ROTJ celebrations as being really sequential... Just my POV).
Sorry for the side rant, just was thinking out loud some about how I'm hashing out the period of the Clone Wars and its transition to the Empire of the classic trilogy... Something about me just loves the idea that the Empire is a loved system by the galactic majority, whether it's "good" or not to us who have the privalege of knwoing EVERYTHING about the story.