Coming from someone who is at end game as a Summoner (turn 5)...
As everyone else is saying, and I have to add myself, Summoner is a disappointment in this game. It's a fun gameplay style, and it's (mostly) okay, but it's not a Summoner. Whatever this thing is we're playing should not be called Summoner; there should be a real FF Summoner class.
SE, despite the fact you guys said you were taking in fan feedback and remaking the game, you really derped this one. Despite everyone telling you the entire time during development what they wanted, and now all this post-release feedback going to you, you continue to say "too bad, this is how the designers want it." Like, seriously? After all this time of remaking the game, now suddenly fan feedback isn't important anymore? This is really a no brainer, and this issue needs to be taken more seriously than just "sorry no, accept it for how it is."
You can't just keep saying "we already made this, sorry it would take too much effort and we would feel dumb if we admit we made a mistake." I understand you wanted a DoT caster so bad, and I understand you wanted a pet class so bad, but merging the two ideas together was absolutely horrible for fans of Summoner. NOBODY that was looking forward to Summoner was expecting this or wanted this. This is not Summoner, it's a DoT caster, with a green dragon as a pet (multiple people on occasion have called Garuda a "dragon" when they see my pet). Yes, Garuda, because
Ifrit is literally useless and Titan is only useful for FATE tanking (yes, I'm aware of you people that think you're so cool because you got through Amdapor Keep with Titan as tank and 3 DPS people, but taking 40 minutes/longer in general is not a good thing). Heck, even ignoring you merging the two ideas together, you STILL could've gotten this right, but it feels like you put forth no effort in the design and just straight up slapped the Summoner name on it at the last second.
As a SUMMONER, I would like the majority of my damage and utility and power to come from my PET. As of right now, the pet is equivalent to a tiny portion of your total damage output, and is an auto-attack turret that you only slightly pay attention to when it's going to die (because that would be a DPS loss, oh no) or when you need Contagion. That's not Summoner at all, in any FINAL FANTASY, and if you wanted to add Summoner as fan service because EVERYONE WAS REQUESTING IT, maybe you should've thought to actually make it like the SUMMONER people wanted; at least SOMEHOW. So many other games did your Summoner DoT concept stupidity better than you did (Aion Spiritmaster comes to mind); if you REALLY wanted to do this funky combination, you could've at least put some more effort into it, or just kept true to past FINAL FANTASY style.
I hope Japan is complaining about this as much as we are. I hope SE decides to actually THINK ABOUT THIS and do something.