So this is a minor point, but just like to put it on notice:
I gave one of my male Vulcans a Tribble. He does seem to like it and he scratches it lovingly and coos at it, just like any emotional race would.
I think the animation should be changed for this (and any android/android-stances, assuming you add that back in-game, although I do understand it is now labelled "jittery" or some such). Vulcans (and any other semi-non-emotional race) should pet their tribbles in a calm manner, different from the rest. It can be tender, but not so much passion and "coochie-coochie-coo" action in it.