I have a question: Why did the Neo-Nazis let Walt live? They've already got two bodies (what's one more?) and the cash and a cook. They know Walt is upset over Hank. They've robbed him, so he's even more upset. Why leave him alive? Walt knows too much. He could anonymously tip off the police, or he could set up a rival operation, or just seek revenge. Jack has no qualms about killing.
(Frankly I'm surprised they robbed Walt - that wasn't the deal, and they seemed loyal to Walt until now, and Walt did nothing wrong to them, but that's another issue.)

Hank's got frigg'n invincibility mode enabled. He's a big man with no cover. The goons had 1-2 minutes to line him up with their automatic weapons. And they all missed. And kept missing. And kept missing. And then Hanks pops up again to shoot some more, and then all miss him again. Useless hit-men!

A budget of 1,000 clichés to produce this remake.

If DEA internal-affairs were investigating Walt's confessional video, they might have some circumstantial evidence to support it:
(1) Hank's recovery was paid for by Walt
(2) Hank's neglecting his DEA duties and has already been reprimanded for this
(3) Hank declined a promotion to remain in New Mexico
(4) Hank was targeted by a rival cartel
(5) Witnesses can testify that Walt was in Hank's office, and Hank closed the blinds twice
(6) Walt and Hank were driving around together to the Chicken Place while Hank was in the final stages of recovery

None of these are strong, but enough for the show's writers to make something of them if they chose to go down that route.