Re-emphasizing, this isn't a question for snark. It's definitely an interesting space in 5e, and I don't feel like the game as written has a lot to say on it, but I'm asking the question because I suspect that people have found interesting answers.
It's on my mind because I keep toying with the prospect of running a level 17ish game that is more in line with heroic fantasy fiction than the D&D genre. I think it's *mechanically* doable, and I think it's a fun line of thinking.