Storyline Leviathan should not be HM.

Please reconsider how you have this set up. I hate that the story line version is "Hard Mode". You get no loot, and it doesn't go with the rest of the primal fights. Also, it is not very challenging.

I would really enjoy it if a 4 man normal mode was introduced for storyline, a hard mode (More challenging than the current HM - Think Coil turn 1 difficulty) was introduced with items that drop at ilvl 90.

Also, I ask for the same of Ramuh, but make the HM ilvl 100. It just bothers me to no end that you didn't follow the formula's for each primal equally. I know not everyone, or maybe even anyone will agree with me. And that's fine, maybe I'm the only one this bothers. But it really... really bothers me.

If they make Ramuh HM 100, what will they make Ramuh ex?

Well, Levi EX is 100 when upgraded, so I guess 110+? Just a thought.

No. It makes sense why there are only two difficulties of this fight: both the story version and the Extreme version are released simultaneously. What you're asking for can only be implemented if the full gamut of three difficulties was planned for Levi and Ramuh, staggered in the same way as the original three. However, this is literally impossible due to the way the initial releases are currently staggered. Take this example of staggering 3 difficulties.

2.2: Levi(Story) and Levi(Hard) is released. Story give nothings and Hard gives the i95-i100 weapons.
2.3: Levi(Extreme) is released. Drops i110 accessory. Ramuh(Story) and Ramuh(Hard) is released. Story gives nothing and Hard gives i100 weapons.
2.4: Ramuh(Extreme) is released. Drops i110 accessory. This is obsolete because Coil 3 is available. Shiva(Story) and Shiva(Hard) might be released. Story would give nothing and Hard gives i120 somethings.

Due to the fact that we're getting exactly 1 primal a patch right now, staggering for three difficulty levels wouldn't work, and it's quite simply overkill on the "reusing content" spectrum if we literally get 3 versions of one boss in a single patch.

Ifrit/Titan/Garuda had a "normal" because they weren't at 50. It would be redundant to have a "story 50" then "Hard" then "Extreme" for Levi, as it will be for Ramuh. Don't expect Ramuh HM to drop anything.

Levi and Moggle HMs are actually a compromise. Keep in mind that Ifrit Hard is ilevel 49 minimum. With Garuda Story being 44, ignoring the HMs would logicaly place the theoretical Moggle Story at probably around i55ish (where Moggle HM is currently) This would place a "Story" encounter at higher ilevel than the first HM Primal. The new Moggle HM would need to sit a bit higher than Titan HM in theory, so probably the i60 level that Levi HM is right now. This would place two encounters with the same boss within 5 ilevels of one another and you couldn't place it any higher because the EX Primals start with Garuda at i65 minimum and only go to 70(Ifrit) before Moggle and Levi.