Looking at my play time, I think you could say I enjoy this game. The ship battles are turn based which I love. And all the other aspects are very enjoyable to me. You have a nice map to work with. You do have to complete the initial campaign chapter to open all options. Each chapter is challenging but not impossible. Each faction has nicely interesting perks. The Fame tree is interesting and probably 80% the same for everyone. Just that last 20% is the faction perks. Playing "Free Games" allows you to set parameters to your liking. I would suggest starting with the easiest settings just to have a nice walk through, understand the basics and get some Achievements while you're at it. Then you can up the difficulty at your leisure.
Its understanding basic supply chains (The game tutorial basically tells you how not to lose), turn based naval battles, while throwing in some piracy to make things interesting. I would suggest playing "Warehouse Optional" as well. It really messed me up at first. They can be very helpful or mess up your whole game plan. I would give an 8.5 out of 10. I saw the mixed reviews but it seemed like something I would enjoy and I was right!

Cheers! Enjoy your gaming!