Lets vanquish this ideal that mop was completely designed for ground mounts. ALL Tillers dailies require a flying mount to get to Skyrange Hozen area or the cliffs between 4 winds and Valley Verman burrow areas which can NOT be accessed by ground mounts. The Shado Pan Dailies where you go to the island to smoke bomb Manted buildings, they all -require- a flying mount to get to. The Golden Lotus Dailies require a flying mount to get on the Spine wall to kill Mantid and fire cannons unless you want to run way out to Kun Lai and down a wall section that has faction guards guarding flight points that will flag you for pvp when you run by. There is an August Celestial daily where you have to fight a Red Crane fighter on top of one of the temples/pagodas that can only be accessed by a flying mount. There is a Golden Lotus Daily that requires you to fly up the cliff and fight a water elemental which is unaccessable from the land.
There is a Pet trainer inbetween Kun Lai and Eternal Blossoms which can only be accessed by flying.
I am sure there are tons more places that are only accessable with flying.