Happiness
In episode 13 of MyGo!!!!!, it is shown that Tomori is going to give Saki a lyrics book that contains what Soyo said about her yesterday and what Saki thought of her when they were in CRYCHIC. In the end, Saki doesn't accept it, simply passes by Tomori, and says, "I wish you happiness." This event occurs in the morning/afternoon before Ave Mujica's first debut, leading me to think that Saki still hasn't forgiven Tomori.
Cut to the Ave Mujica trailer, where we see a sticky note with "Saki-chan, Are you happy?" written on it (apologies if there is a mistranslation here), which makes me suspect that it was written by Tomori to Saki. This time, it successfully reaches Saki (we are shown a teardrop on it, presumably Saki's).
My question is, given that Ave Mujica is (hopefully temporarily) disbanded, will Saki perceive this positively and reconcile with Tomori and the MyGo!!!!! gang, or will this become new fuel for her 'revenge' against Tomori? Whatever the outcome, I think it will lead to Ave Mujica regrouping again under Saki.