Well here is the thing. Not much was mentioned about summoner as a class. I am sure they will have something for them such as Carbuncle and the Zodiac. Considering dialog from the Primals themselves, they are not likely to stick around for long. Which I think would be put in quite nicely considering what has been said. Primals are one of a kind and I really wouldn't want to see Ifrit appearing in multiple times in the same area as, for me, would ruin the lore. But I do agree about the Drama. If for instance, I were to get the last primal, I do not want to get angry tells from Masamune Linkshell Leader A. Though I can't be sure until it is put in the game.