For me personally i find it annoying that when you want to get on a 2 or more person mount that you have to be in a group with the person. I know it helps because you don't want random people getting on your mount, but maybe to get on the mount you had to be a friend of the person and every time one of your friends wanted to get on a notice would pop up and ask if it is okay for this person to come onto your mount. I guess this could get annoying if a whole bunch of banners came out asking for permission, so maybe there could be a setting where no one is allowed on. This isn't that much of a big deal but i figured it was worth a shot.