It would be a boring end to the show if he just went away for life, imo.
I want him to go down all guns blazing. Just go completely off the rails
This kind of attitude is what basically makes people want to forgive walt. For everything else that can be said about him, he is cool, intelligent, and how he manages to go up against opponents far more powerful than him makes him pretty badass. And you want him to go out like a badass, when that is not at all what needs to happen.
Breaking Bad is not a power fantasy show and it shows the horrible consequences of Walt's actions, cool though they may be. People who like the power fantasy aspect of it want to justify walt's actions so that they can continue to enjoy the fun aspects of being involved in the drug trade without having to deal with the fact that he is destroying lives. To try to make his final moments awesome just for the sake of being awesome is just trying to ignore the terror of what walt is. His end should be appropriate to his character, and his character includes being a cancer to those around him. It shouldn't go out of its way to glorify him for no reason.
And I hate shows that do that. Breaking Bad wouldn't be a tenth of the show that it is if it just tried to make walt into this mary sue where he doesn't have to deal with the ramifications of his terrible behavior like that piece of shit Kratos or half the characters of True Blood. Those kinds of stories are brainless, masturbatory jokes.
I don't have any need to see 'justice' done or anything, like some people in this thread, and would be perfectly fine with walt getting away as long as it works within the narrative right (I doubt that will happen however. If it did, the show would have ended after Walt got out and Hank would never find the book), but to try to delude yourself into thinking Walt actions were morally permissible just because he is also badass is doing a discredit to the brilliant story you are watching.