I think Tartakovsky’s mini-series is the perfect 2.5. It covers the start of the war, Anakin’s knighthood, his struggle with the darkside and leads directly into ROTS.
I agree. I was thinking maybe a scene or two from the other CW could be inserted (even though it’s 3D instead of 2D) showing Bail asking for help (“Years ago you served my father in the Clone Wars”