I'm far from an expert on this stuff, but after hanging around here for a year, several things come to mind. Hopefully others can add greater insight.
Really, "jumpy" brakes can't be fixed? That doesn't sound normal. Sounds like they were not broken in properly.
"Erratic shift pattern"? Is this like hunting for the right gear? You know, shifting between 4th and 5th all the time. I would not expect a Toyota tech to fix it because that is "normal." Read the discussions about ShiftSense Pro on this site. That might be the answer. Now, if it shifts straight from 2nd to 5th, that's a problem.
"Transmission has delay"? Are you referring to hesitation on acceleration? I'll bet there are a hundred people here who can advise on that. I just cross my fingers it will never happen to me.
By the way, nice lookin' truck.