Round table

Perhaps, with 20 demonstration generations, the results might be more balanced, but I can share the maps – I actually had a 12:5 ratio, and I think that's a clear indicator that the template needs improvement.

"A clear indicator" seems a bit too categorical. Based on that principle, the other templates wouldn't be playable at all. It's better to have 1 road against three for the opponent than 0 against 1, as often happens on 6LM.
I've already mentioned here that I'm not aiming to create a perfect template, including one that is completely balanced in terms of roads. For now, it's enough for me to create one that is better than the existing ones. It seems to have worked; at least, there isn't the same road problem as on 6LM or 8XM12, and there isn't the same obvious default strategy as on 8MM6.