I would leave it as is.
But I bring a possibility. That the location be delimited to two regions, at most 3.
Any player should only be able to connect 10 (15) cities, 2 (3) regions, both adjacent to the home region. And they could not connect with the second region until they had connected the 5 cities of their native region. (With the third, until you have the 10 cities)
With that, I think there would be fewer birds flying in search of prestige and they would work more on monuments and cities mainly.