Aokiji is going to join Dragon
As we can already predict Dragon has people in the marines , and around the world. And when he calls for the revolution of course they will come. However, I believe Aokiji is going to join up with the revolutionaries, if he already isn't part of them.
Notice how Smoker stops his attack on luffy, when Dragon CASUALLY puts his hand on Smoker.
Their conversation doesn't even look like they are enemies. So , my first response is that Smoker is part of the Revolutionaries. And seems like Smoker knows him. o-o.
Next is the "message" Smoker gave to Aokiji:
Now notice he mentions the "message" when he is telling Luffy why he let him go. He already knows about Albasta, so what else is there to tell Aokiji about? oh idk Dragon saving luffy.
But then he says no his message was too stupid. He probably thinks that he wouldn't save him or something, as we know he didn't know luffy is Dragon's son.
Him being against the W.G:
Its pretty visible that he was against the world government, when he decided to quit being a Admiral, just because he lost to Akainu. Which strengthened Dragon's ideals, of the injustice and the cruelty of the W.G.
So all this leads me to believe, that Aokiji is going to join the revolution against the W.G along with Garp,and Smoker. I do not believe he will join the Strawhats and become a pirate. Because its just not his style, plus he would simple overpower luffy if he were to join right now.