Thank you kindly for the feedback Dloomys, it means a lot.
As for Yoda, no he won't appear here and most likely won't in episode III either. Two reasons:
One, given that the Vader Father and twins surprise will be spoiled, I wanted at least one thing to be kept secret.
Two, honestly I never could justify a reason to put him in. Yoda's entire connection prior to ESB is that he trained Kenobi and had some connection to the Force that gave him knowledge of Emperor and Anakin. No mention of being a fighter, no indication he was leading armies, or that he was in the war. The more I figured out the story for these Episodes, the less and less he appeared to the point where I asked why he needed to be there.
Eventually I concluded that he worked better as a mentioned character, a legendary figure who's shadow hangs over various people, never seen, but a driving point for character motivation. Nellith, mentioned in act as the defacto Jedi leader in the nebula, is revealed to be the only other student of Yoda's still active and in many ways she stands in for some of what he represents.
The conflict between Obi-Wan and her in act 2/3 will in many ways be one to determine the future of the Jedi are to be in this war; active guardians of peace and justice on the front lines vs. the more passive keepers of knowledge who restore and construct for their allies rather than destroy outright enemies.
Do the Jedi healers, engineers, philosophers, farmers, etc who have been allowed to become more than just simple warriors in the past millennia pick up their lightsabers again and become Knights with all the risks that entails, or do they risk the Republic falling by staying as they are? Kenobi and Nellith, two pupils of one Master, both right, both wrong, with the future of the Jedi at stake.