We are not getting content more difficult than Twintania.
Square Enix got the memo. Yoshi P predicted 100 people would beat Twintania before patch 2.1 but only one or two groups managed to get the legit kill before the nerf. Square Enix has said they have learned and they will use these results for more raids in the future. Learn from what, that their content was too difficult?
Now, they have said that they will be nerfing all hard mode primals when they add the extreme mode primals, they will be adding echo buffs to things like the early turns of coil as they add more turns of coil, and that they will be lowering the price of myth items as they add more myth items.
What this tells me is that the difficulty of the game right now, is what it will stay at. Extreme primals may very well be the same difficulty as the current HM primals before they are nerfed, and future coil turns may as as difficult as the current coil turns.
The epitome of this, is, of course, Turn 5, which is what some of the hardcore FCs call "the only difficult fight in the game". Yes, there are people that think turn 1-4 is easy mode, and I don't think that we'll be getting anything similar to turn 5 soon. So, long story short, if you don't like the current challenge of FF14 endgame, you will never like it, because it's more than likely not changing.
I'm just being a realist. Challenge me if you wish, but I do not agree with the "dumb things down as you add new hard things". all this tells me is they're copy pasting hard mode titan and calling it 'extreme mode titan'. it won't be that exactly, but that's what it feels like to me.
Discuss why or why not you think Twintania would represent the most challenging content this game has to offer.