Summoner as it is now, it's mixed with the property of call a companion bassed on the primal aether (if i remmeber correctly the lore) and the ability to channel the Dreadwyrm aether through our being to unleash the skills Heavensward gave us. They also stated theyr dessire to focus on the Summoner abilities than the Pets he is alowed to call. With those cards in the table they can manage to give us some neat skills with more summoning flavor, we could even Trance Ifrit, Garuda or Titan in a future.

Having said that, i wouldnt mind to have more primals to choose from.

I understand the lore as it is, but if we have manage to move the aether of Bahamut, the character should be able to move every other primal power in the same fashion.

PD: Sorry for my bad english.