The only problem with the Summoner is the Egi design they were balanced around their role instead of the Elemental wheel which makes the job underwhelming. People really started being more vocal when they nerfed the Summoner without fixing the real problem pet design.
In order to rebalance the Egi they have to use the elemental wheel otherwise it will simply be buffing Ifrit which won't change anything since people will use Garuda because she is MP efficient.