screams in the void nails it, although I didn’t think there’d be armies of Mandalorians. I was sure that the Clone Wars were a war in which the Jedi fought against clones, as did everyone else (cf. Zahn’s Heir to the Empire trilogy).
Imagine how much more interesting it would have been if order 66 came in II and III was about the Jedi reorganizing and fighting the clones and Vader (and losing).
Vader is turned in II and suffers the catastrophic injury after re-enounterimg Ben in III.