I was utterly stunned by Ramuh when I first saw him, and was flabbergasted by the sheer scale and majesty of every summon shown thus far, from Titan to
. I was even charmed by Carbuncle. I hope they impress when in context.
I wouldn't be surprised if they changed it up for the battle with Leviathan, as she seems to be a summon far beyond anything else in the game. I mean, she's more than likely that serpent thing intertwined with the crown-like adornment of the Goddess in the logo. It says something when a character/being appears in the game's logo.