Isaac's motives are all over the place.

It's like the writers forgot he existed midway, and now keep adding him in the conflict one way or the other.
First he wanted to help the russians do wet work over ukranian president, frame his best sniper with it, for reasons unknown.
Then he realized it was just a cover up for a bigger ulterior motive, so he starts worrying and wants out, but the writers kept him relevant by making him kill Donnie's mom, for reasons unknown.
At this point he is starting to fade away from the story, but again the writers put ihm in a better seat by exposing him to NXB, giving him some leverage over Beechum and russians. But then when he confronts beechum, he shrugs him away like a mosquito.
Then he finds out about Lon scott being the shooter, and tries to make a deal with beechum again, but instead he gets told to kill his friend who helped him get access to NXB files.
Now he just wants out so he waits for Bob and confronts him, begging for partnership, but he gets shrugged again...
Then he just wants out again, so contacts beechum but he is told to do one last job which is to kill Jack, where he confronts Jack like a badass and then gets shrugged off by him, AGAIN.
Now he is just roaming around confused and gets confronted by Gregory, who tells him to kill Bob. Confusingly, now, Isaac demands the 10 mil, for a wet work? And then he fails to do it, but still wants diamonds, so he extorts the tracker follows it, only to find out diamonds and the thumb drive are gone...

I mean why is he still alive in the show anyways. He should have been killed off, instead now he is just bugging everyone like an annoying mosquito. Nobody wants him around but he still is, but they dont want to kill him either because then their will be blood on their hands, lol.