BAT can clean obstacles.
BAT-1 not armoured.
BAT-2 on half armoured the sapper section also can transport.
Most likely in tactical to fight WinSPMBT (and in a reality) will work ahead armoured "IMR", instead of BAT.
BAT on the purpose more likely the rear machine.
It should clear away roads and to dig strengthenings.
But as in Russian OBAT catastrophically does not suffice slots, it will be better if to make one "IMR" instead of "DZM" since 1969 up to 2020. 
P.S.: Why the USA can have armoured Engineer Vechicles, and the Soviet army should clear away obstacles under bombardment of the enemy on not armoured the bulldozer?
Re: Russian Engineer Vechicles .
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