Thanks!
I'm guessing you mean 2 scenes missing in the CG gallery? You may have missed something during the exploration days in Aris, that would be where I'd recommend checking first for alternate outcomes or situations missed.
As for Zhokhar, he will be getting romance content soon. The way this game implements partners is with a staggered approach: meaning that Mac may be the only option now, but as more companions join the party, there will be others to choose from (all intended to have the same amount of romance content by the end).