Palpatine1977

Approx 1/3 clones, and 2/3 recruits by 0 BBY.. so, chances are they were indeed recruits... but, no guarantee

Wow, these are all very good and detailed points /bravo I don't know, it is still circumstantial, and I don't think that is Fett's style, he has high morals and wouldn't incinerate innocent civilians imo... then again your point about Vader contradicts that, not sure if he would have ordered their death (see pic) or if the stormtroopers just considered them collateral damage without his consent...

I am betting there will definitely be Stormtroopers, but not Sandtroopers... And either of those ones would be completely CG, is what i would guess.