I guess my question is, are moves like the cross more naturally suited to "angled" embraces? In a V-embrace, there's a natural default twist between the follower's upper body and her hips / legs. (Her legs are going straight back and her upper body is angled to create the V-shape.)
In my limited experience of V (which I think i've made clear that I'm not as skilled at) the alignment is not as you describe above. The people I see doing it (and what i've done myself) is that the hips are under the shoulders at the same angle to the leader. If the shoulders are at 45* to the leader, then the pelvis is also. The reaching therefore may be directly "back" if back means "parallel to the wall down LOD", but the reach is not perpendicular to the follower's own pelvis... the step becomes at an angle to the hips.
This may be a mistake and may be why I find V awkward... side steps would also therefore be at an angle to the pelvis rather than parallel. However, this is how I've seen it.