There are already some huge maps out there, Just Cause 2 and 3 both have maps at around 1000km2, and those games are beloved by their players. But if the next Cyberpunk game was announced with Night City now being the size of an actual large metropolis, say like New York, would you say that’s too big? What determines what “too big” is?
The copy-paste dungeons were a big issue for me. And the amount of reused enemies and bosses. There is definitely a way to “optimally” play the game for the best experience. But I’d say that goes against the nature of what an open world is supposed to represent.