So about Summoner...

[TelosNox]

If you compare o6s sam can do over 200 dps more than blm.
https://www.fflogs.com/statistics/21/#boss=52

Ok and if you compare o6s then SMN is 100dps behind BLM....
You can not just pick a single specific fight and use it as balancing benchmark.

@Dualgunner
Right, I forgot that brotherhood is physical only. Should be adjusted as well.
In general there should be no "if you bring this class you need to bring that class and you can not bring that other class" stuff according to balancing. PPL should be able to play the classes they like and the only thing that should have impact on composition is the role (melee vs. range) and that impact should be small. Why not bring 4 melee? Why not bring 4 range? If the game is good then both should work without much penalty.

[Sunako]

Ok and if you compare o6s then SMN is 100dps behind BLM....
You can not just pick a single specific fight and use it as balancing benchmark.

Well I compered that because it have purely singletarget fight. If you compare aoe fights then summoner need huge nerf. But in general singletarget dps is what usually matter, not aoe dps.

Edit:
Way how summoner aoe would be nerfed is make death flare and akh morn singletarget only and boost tri-bind potency 70 - 100 even without stance + remove dot drop off from the bane. Nerf painflare for 100 - 150 potency. Reduce cast time for tri-bind 1.5sec so it would be possible weave between tri-binds. Then summoner would have more sustained aoe damage than burst aoe damage and you could not abuse that burst during add phases like o5s. That would make it more balanced in certain fights. Deathflare, akh morn and painflare are main problems why summoner dps is insanely high in any aoe encounter.