Little update here:

I did play my first game, and I was pleasantly supripsed. The game runs smoothly and it's easily moddable with slight changes to better fit the players' tastes.
Also, the map look is mediocre at best: different line widths, lazy photoshop brushes for trees and a couple of sea monsters clearly copy-pasted from google.
The game is BEGGING for a better map. I wonder whether i should do a map of europe first, or directly go for something entirely different.