http://www.mfwars.com/2016/02/minis-modeling-monday-simple-surcoat.html
Great idea! I have to see if I can fine some cheap dominoes of my own; they could be cut in half to mount printed counters...as long as the corners were squared and not rounded.
I did something similar when I wanted to make a extra large, Deluxe game out of Leuthen: Frederick's Greatest Victory. I bought some ivory-white dominoes and pasted my own home made graphics on. The map was blown up to allow them to fit. Those dominoes could never but cut into squares so I never thought of it. But if I could find some really cheap ones....
(https://cf.geekdo-images.com/images/pic1456369_md.jpg)
Those are some good looking rounded corners. ;)