I suspect that would be a whole 'nother game. Could be amusing though. But I don't think this is the place to talk about it.
..amybe, whole new (more, rather new, than "another' ) game would be best ..solution, most effective ..approach, to'wards all those ..issues ( *graphics sub-core, ballistics,/shooting (units behaviour) mechanics (dynamics) sub-systems.. ( yaap, includes those *LoS ~》LoF, \ eyes, /shoulders (arms), /hip voxel /points, of shooting
( (voxel) model, "paperdoll" of (humanoid, bipedal, 2-legs units.. )
btw. - yop, very similar "doll-modell", with movable legs, arms, neck, and heads, which used to have, and use artists, painters, and sculpturists, mainly..
..so, all, whole that core-engine of UFO-XCOM (~1993) (/OXCE++ (~2008-'12 (
) ) cwould be rewritten, with possibility of fully implementing and adding, changing all those long-wanted, long-discussed ..changes, things, thus make whole refreshed, fully -rewrittend "old" UFO, ( *OXCE ) in version, and niveau, of y2020