I enjoy the Summoner Job since it's the 1st time that the Summoner is it's own job but it does need some changes
-Summoner's get the ability to summon the Primals with a instant recast time.
-The Primal drains the Summoner's MP with each attack when the player is out of MP they automatically use there signature attack and leave.
-Once the player activates the Primal's signature attack the Primal leaves.
With these suggestion it won't make Summoner's OP because of MP cost and damage loss from overuse of summoning Primals