People need to stop and think for a moment what they're asking for.
I mean really think about it.
Take a look at the level of difficulty in Leviathan/Ramuh hard vs the "other" hard mode primals. Then take a look at all of their extreme counterparts.
The number of mechanics used in Leviathan and Ramuh hard are ridiculous by comparison, almost none are used. They do not teach you much about their mechanics at all on your average first run through them. They even use less mechanics than Ifrit, Garuda, Titan, or Moogle. They teach you almost nothing.
We've now got people on the forums complaining that the fights in the game (whilst leveling up and unlocking content at end game) do not prepare you for Twintania or other end game fights.
We also have people complaining that no one does these fights (Leviathan/Ramuh hard) anymore because once they've completed it, they've no reason to do so, resulting in larger queue times. It's become so apparent this is the case that the devs even addressed this in one of the recent live letters.
Is this what you want? That's exactly what you're asking for, a fight with no rewards, no reason to do it after the first time you've completed it, a fight that doesn't even teach you.
Asking for all this broken, watered down content is only really harming the game. Instead of encouraging you to learn and improve, it's going to turn the player base into an idiocracy, where no one can really accomplish much short of "the 5%". People who refuse to learn, who don't want to understand the game or get better are the people preventing the game from becoming any more complex than it already is currently. Yoshi himself has said he's afraid of including things like pure support jobs, or "complex" jobs like Blue Mage because he's afraid the player base would find it too difficult to play with.
So think, please think. Is this really the path you want to proceed down?