I noticed that squad likes to use a lot of maps with thick foliage, a bunch of trees and bushes to hide behind. And it that's the case, then why not make a new faction based on eastern europe like the Czech, Ukraine, or Polish armies. It would make a lot of sense since in a lot of the games we're fighting russians. And while i can't speak for the other eastern armies, i'd gladly ride around with a Polish "Rosomak" armoured personel carrier and go full auto with a beryl rifle. Also i don't think anyone would have a problem making an eastern map, since 90% of the territory are either forests with a few houses here and there, or huge farms.
Overall i don't think adding an eastern army would be such a bad idea, in fact i'd try to do it myself if i knew how to actually knew map design or modeling.