1) I see rather much dust kicked up by the explosion billowing all over the place, does not seem like smoke to me. Not returning fire might have something to do with a) assessing damage (if there was any - as I said, if it penetrated, driver was most likely injured - either him, or someone else in the path of the jet), b) vicinity of civvies in the field of fire, c) not seeing where to return fire.
2) Did not lok at pics at first, my bad - the vehicle on pics is not T-95, but Black Eagle demonstrator - as was lately revealed, a mockup (not that hard to make it rotate) - without gun (with only mockup 125mm or 135mm), without armor etc. Just a sales stunt that failed - T-90 gets customers, nobody was willing to pay the development of this beast.
3) The problem lies not only with unit slots, but also with weapon slots.
Of course the solution is simple - try making your own OOB11
It's not that hard, if you do not try to rearrange it completely, with moving units and formations
It is true that you can possibly reduce say number of 100mm and 125mm guns to gain some space, but only at cost of messing up scenarios.