Overall I'm more than happy with the manga the way it is, so all I wish for is that it remains the way it is.
Plot wise… I would like Big Mom to be taken care of before Doflamingo. Honestly, I know she is a Yonkou and all, but I couldn't care less about that old hag, I want more Doflamingo action!!
So what I would like to see would be something along the lines of:
-- When Doflamingo arrives at Punk Hazard, everyone has already left, and they've taken Caeser with them. Smoker reports what he saw to Sakazuki, thus resulting in Doflamingo losing his title as a Shichibukai. Dofla gets pissed, and now that he can no longer produce SAD nor do business with the World Government, he decides to make his move;
-- He goes back to Dressrosa and assembles his crew. He calls back whatever other subordinates he may have. Also, we know he has some sort of influence over people who have eaten SAD, and I think he is well aware of that - it was his plan from the start. He will mind control the SAD army which he helped a Yonkou create, and make them work for him instead. Now he has his crew together and a very powerful and obedient army: it's time for him to make his move and try to become Pirate King!
-- The said Yonkou is Big Mom. Without her army, her numbers will massively decrease, and her crew will be reduced to around 20 - 30 members. This will coincide with the Supernova's assault. Working together, Luffy, Law, Kid, Hawkins and Apoo (and hopefully with some help from Jinbe aswell) will manage to take down a weakened Big Mom and what was left of her crew;
-- The Supernova alliance ends after this fight. Because on their own they aren't powerful enough, none of them is able to become a Yonkou (yet) - instead, Doflamingo steals that seat.
These are all predictions and I have no basis whatsoever to support them, of course. But I think they would make for another exceptional year :D
Even if it's just a prediction, it's very well thought out and I commend you for this because it would be interesting if the story went this way!!!!