I got through the first 2 tutorials yesterday, and will resume playing the 3rd one when I get home from work tonight. The "Orders" system is one of the big game-changers, obviously, and am now learning about how Characters work. It's clearly not as deep or complex as in Crusader Kings, but still interesting. Would love to see a Leader/Character system like this implemented in Stellaris and Distant Worlds 2.
I have to admit that one aspect of Old World I'm definitely *not* fond of so far is the (now almost ubiquitous) 1UPT. In all honesty, I suspect I'm never going to love it. But I think I might be able to enjoy the game in spite of it.
I also have to give a shout-out to the game's soundtrack. Just...wow. I have no words. In terms of beauty, length, and variety, I'm utterly blown away. I could almost love Old World for the music alone.