New Chief Engineer Not Scotty - The plan is to have and kill at least 3 engineers before Scotty and when Scotty is on the show, he will be in near death situations frequently and there will be awkwardness because of the history of CEs getting killed. To ensure there is enough fanwank, one of the CEs will have the last name LaForge.
Pike will get Rikered and get cloned due to a transporter accident. The 2 Pikes will fight over who is the real one and who has to get injured. The loser will leave and change his hair to something that does not require 7 ounces of product to maintain. The "second" Pike will come back after the accident and reassert his claim as the real Pike and will end up being a dodgy admiral on the TOS revival. Una will consider using Pike2's transporter pattern to fix Pike1, but thinks Pike1 got a happy enough ending and leaves him alone.
Brian Brophy will be cast as the lawyer for the Federation in Una's trial.
There will be another time travel episode that leads to the rumored crossover event with Picard and Disco that also serves as a launch of the Janeway show. This will be facilitated by Wesley Crusher of course.
All kidding aside, I expect a gradual recasting of TOS roles where not forbidden and more of this kickass old school Trek. I wish they could crank out more of these episodes, but the production values are so much higher than previous Trek. I am thinking they realize that 10 can be done annually or close to it.