...the death of asoko etc
Ahsoka is smart so I'm thinking she will see the changes in Anakin and maybe take off. Or... Captain Rex will save her. They've pretty much set up Rex leaving in the episode where he met the AWOL Clone. Remember the Commander in charge of the 501st in ROTS was not Rex, who would be the natural choice to lead (since he does throughout the Clone Wars).
I've been thinking lately about Rex and Ahsoka and wondering if maybe just maybe their characters would feature in the much talked about live action tv series set after ROTS? Their adventures after order66 perhaps, I'd watch that
That episode was interesting, but I couldn't believe they didn't show them building their lightsabers. That's what everyone wants to see! Maybe it's a two parter, I don't know.