I am revisiting this question after seeing the sweet Whovi-os t-shirt. My son would have flipped if he saw it, but I didn’t want to show it to him since it didn’t come in small enough sizes. There is no way a men’s small would fit him now, let alone within the next three years (and Who knows if he would still be into the show then - pun intended.) Has there been any more talk about this? Even if there was the option to purchase the size, but unless a certain number is reached they won’t print it?