I think that it is far too uncommon to have gay characters in star trek, fiction or fan fiction, yeah there's slash spirk, but, actual gay characters are so rare it's nice to see when they are done well.
I do think just picking a Vulcan to have be interested in a romance of this sort though is a bit, awkward, unless the Vulcan has already been established as having that sort of preference, just dropping it in, will aggravate people, because they often think that "Vulcans don't have emotion" is accurate, not an exaggeration relating to their self restraint.