The Polish PT-91 Twardy MBT really should exist in the game, it's awesome.
Although prior to the dissolution there was a strong drive to keep military equipment the same across the board, invariably Russian equipment, it's obvious in hindsight this was impossible to maintain. I guess to ease the problems that might arise from this situation there'd be lots of cross-training with Russian kit so when they resupplied other national armies with gear in case of loss of industrial capacity due to strikes or being overrun there were fewer problems.
Of special interest is the PT-91EU which was an Urban Warfare variant. Although in real life this vehicle turns up way later in 2011 the exigencies of war would see it being developed far earlier. Due to its high survivability it's likely more of these would survive than the other variants.
https://en.wikipedia.org/wiki/PT-91_Twardy
