parallel structures with preposition
He did not have the luxury of moving from place to place, of closing a bathroom door behind him, spraying some air freshener when he left.
of + something
(without of) spraying...
He was eating mostly liquid supplements.
He was taking food through a straw.
I still shopped every week and walked in with bags (food) to show him, but it was more for the look on his face than anything else.
for the look on his face
(without for) anything else
Thanks to Gary, and Gadnning's help on Italki, I'm aware that for the structure, more for A than B, it's okay to omit the 'for'.
But for parallel structures with preposition(I'm not sure this is the right term to describe it, since there could be more than two parts of a similar structure in a sentence, as is shown in Example 1)
, in what case it makes sense to omit the preposition in that sentence?