Harder doesn't equal better.
Some of us happen to have a love for history and expect the game to offer us the chance to play and see some historical events happening if you pull them right.
Someone call Cortes or Pizarro and tell them they did it wrong historically. Somehow they happened to pull the blitzkrieg conquest of two native empire in months, and their annexation to the Spanish Crown didn't mean that suddenly the peasants went mad back at home revolting all the time like madmen because "spain had overextended".
I'm going to give you a pictorial showcase of what I mean.
Note the date. 1531
Now note the date in this one. 1534:
Try to do that live in the game. Good luck with everyone revolting in your empire. Funny enough doing this kind of stuff Spain didn't collapse because "overextension" but it turned from a more or less second rate european power into a world superpower for almost 150 years.
And certainly a lot of revolts happened in the meantime, from the comuneros to the many incan revolts. None of them involved 11 thousand arquebusiers in tercios spawning in Cajamarca, however. Just goes on to prove that revolts in EUIV many, many times go well over the top of what's believable.