Hmm kinda thought we had that with archer and mnk abilities. but if your talking about somthing that runs off of a stamina aspect, then I would say that would likely be too much , considering you can call mounts when ever you like, no cool down on calls, it would put added stress on the UI, I would say they likely wont give us somthing like that on those reasons alone, much less the abilites we do have, fact that anima is stupid easy to refill these days , you have free atherite ports in towns, would have to say transportaion is of no real concern or issue. Now to say a charge feature wouldnt be cool , would be a lie, but would also be very impractical other then use of making fraps films and such , much like any other emote. would be an exciting little emote to see, but overall , impractical.