You actually have peacetime gameplay. It is completely possible to play a nation and only fight defensive wars.
The westernisation model is much better than EU4, in that countries start with a certain amount of 'progress' that requires passing a number of reforms, each of which give you a small boost when you pass them but also increase the likelihood of reactionaries.
The economy model, although not perfect, is engaging and rewarding.
Rebels can be handled before they turn into annoying whack-a-mole manpower sinks.
There are less, kick-you-in-the-balls events that trigger when you are doing well and then spiral out-of-control. I.E. stability hit via event, monarch dies (-1 stab), now at -2 stab, manpower low, hello Peasant war; going from recovering from a recent war to crippled for 10 years in the space of a few months - without you being able to much about it.
Colonisation, again not perfect, but is more of a direct competition between two or three nations, whereby several nations with an interest in a province can compete by spending some of their limited colonisation points (gained from naval power etc) to out-compete a rival. Tensions can rise in these provinces and a war can trigger over colonial rights.
There are some big flaws, but as there is no ironman, you can use a few mods to 'fix' them.