Since broadcast TV is getting less and less relevant, the ratings to get into the top 20 keep going down all the time, I think that counting LGBT representation in all media is what's important. On TV at large (including broadcast, cable, etc) at least, the numbers are certain more than 1.3%, probably close to 3%. Considering that the number of LGBT in the general pop is hard to acertain and many minorities are even more badly represented (latino's), I think the situation is getting pretty good.
Also, there are limits to representativity of all kind, from a storytelling point of view, a casting point of view. If you've got a cast of 10, should you really shoehorn a gay role in there? That would mean 10% are now gay, more than needed, and some other minority like asians could get cut out.
You say, ha lets put a gay asian in there, it will solve everything, brilliant... Except the story's set in the black New Orlean Community, oops! Hmmm, lets make the gay black and next time, we'll replace a caucasian by an asian to balance things out and give the token black role to an asian... (LOL completely insane!!!!!).
Yet, that's how activists would want it to work.