QQ started on worgen not having mounts long ago....blizz has commented-countered with blue posts.
the whining about the horde having 6-7 extra mounts is insane also and another consideration is there may also be a goblin PVP mount to top that at the PVP mount vendor.
tauren back in vanilla wow (beta) were at one point going to get "plainsrunning" something near same to what worgen are getting "running wild" in cata. wasn't implemented and they got mounts. so who knows if worgens will stay mount less.
also sure the horde will join the QQ if goblins can acquire faction rep and acquire other horde mounts, while other factions may not be allowed to get goblin mounts?