I still think Peter needing his tech removed
In season 3 there was a man who had "advanced so far he could see the past, present, and future" .. when they attempted to stop him, and keep him from being able to do this, he tried to have everyone killed, Olivia, not being from the Redverse did not understand the signals like the other people in the Redverse and survived the attack - and stopped the guy.
We know Peter will not want the tech removed from his head, we also don't know what Peter "wont understand" in order for Olivia to be able to stop him.. so the question is, will Peter peacefully let Olivia take the tech out? Or will Olivia have to fight to get it out?
This season is starting to show us it's true intention, "Once you see what it feels like to be god.. can you ever really be a normal human being again?" It doesn't matter who loves you, or who you are connected to.. in the end, finding that kind of power will corrupt you, "With true power, comes pure corruption."
Are we going to see that in the end, Walter and Peter are stronger than Bell? Or are we going to find out that they are no better?
Walter wanting his bad brain parts removed...is going to be an issue going forward.
at this point, I think we see Peter lose the tech, and Walter being a more evolved human being, and being able to control himself, even though he has seen what it is like to be a god.