There are only two situations wherein I find recall pots useful atm.
One is when I
In this case, I can conveniently use a recall pot to get to the dungeon's entrance fast since there's almost always a phoenix by a dungeon's entrance.
Another, which I find use in daily, is using it to teleport to my HW. Simply because my havenworld isn't near a drago, and it takes quite a run to get there.
with that being said, I think that the recall potion, as it is currently in the game, has very limited use since it's basis for teleporting is simply the last phoenix you linked yourself too.
It would be nice if there could be some sort of like.. a ''Favorite List" of places provided for a player, like some sort of small pop-up window, and the a teleport button beside each Place or Zone name in the list, and this button is active if the player has recall pots in his inventory.
not sure if i made sense, cheers.