Seriously 3-5 minute repop on NMs?

[Abriael]

No, it becomes routine if you shorten the timers to the extreme. Indeed, that's the very definition of routine. There is nothing routine about fighting an HNM that takes days to spawn. If they ceased to be special for you, then that is your problem. I can only imagine how routine those mobs would have become if they had popped every 2 hours, as you seem to be suggesting.

Actually a routine is simply a task that gets repeated over a period of time. Whether it's two hours or two days or two minutes, it still becomes a routine.

On the other hand drastically reducing accessibility to content means that the developer effectively developed content for just the few people that manage to get a shot at it. Advocating such a possibility in a game that already *lacks* content is rather funny.

Because they would happen too frequently. It would become the norm.

"too frequently" is arbitrary.
Even with a short respawn timer, linkshells would have to organize in order to bring a sufficent number of people with the right class mix to the fight (if it's challenging enough). Which, by itself, makes the situation different than "the norm".