Hello all,
Here's my humble speculation on the "Who's in the suit" question:
At the death of AF, Mac's cyborg brain recorded "all that he is" and when the bodies were picked up by, most likely, Dept. H, his persona was "downloaded" into a sythezoid. This works for the whole "tear" picture in perhaps a nod to "Even an Android can Cry". Think of the story possiblities with an artificial Mac raising a newborn while mourning the loss of Heather
-be seeing you