Originally Posted by
RedLolly
Summoner being a pet job was actually a unique detail of the MMO Final Fantasy titles, as the only one where it's a proper "per job" is FFXI.
The version we have now, casting summons as giant nuclear blasting spells, sometimes with secondary party effects, is a much closer recreation of the classic FF job. Even giving summoner some healing spells reflects many past summoner characters, as it was commonly paired to white mage.
In short, the devs were looking at Final Fantasy for design ideas; you guys are looking at WoW.