I'm not gonna discuss every job upon reading this, although I can tell the information is not correct. But strictly referring to the SMN portions, your logic is extremely flawed and misleading.

You even make a generic explanation that says "As you can see, the delayed opener pulls ahead of the early opener by 444.5 potency, mainly due to the extra Ifrit attack, the extra R4 and both Akh Morns within Devotion, and the extra DoT ticks of the first Tri. And like the BRD opener, this gap will remain unless the boss becomes untargetable with 12 seconds left on both DoTs in the delayed rotation, although it’ll still fall short due to the way Devotion is set up for the remainder of the fight (i.e. allowing the use of two Akh Morns/Revelations and an extra R4 in every Devotion window)."

In reality, such a potency gain doesn't exist, and I'll explain why:

1. You don't "gain" an extra ifrit auto attack just by delaying the Bahamut. You could argue that you'll "gain" a very small amount of potency by pushing an additional auto attack into raid buffs, but you don't gain an auto attack outright. If Bahamut is used earlier, that auto attack will just occur after Bahamut finishes.

2. I doubt you can even get both akh morns on Devotion using your proposed opener, considering you're listing the 2nd Akh Morn 7 GCDs after the Devotion weave (and assuming the pet AI isn't botched, Devotion would cast right around the time you're using it). 7 GCDs @ 2.5s = 17.5s of time, not including the additional time that would be added on due to GCD delays with hardcast GCDs (what we refer to as the "Caster tax"), or the time required to actually weave oGCDs. Devotion is only a 15 second duration.

3. You aren't "gaining" DoT ticks either. What you are doing is simply avoiding clipping your Tri-Disaster into opener raid buffs and instead electing to hold it (though, you don't list a 2nd Tri-D in your opener despite it being 16 GCDs long, so I don't know where you're proposing to use your 2nd Tri-Disaster). But either way, the choice of clipping your Tri-Disaster early vs. not does not magically gain you DoT ticks, as DoTs will always be up on your target to gain server ticks regardless.

4. You probably didn't even realize that this would be an issue, but the proposed Bahamut rotation you're advocating would even cost you a Wyrmwave cast. If you're weaving your 2nd Akh Morn in the 6th GCD of your bahamut rotation, your final 2 GCDs MUST be instant casts to ensure those final Wyrmwaves don't ghost (by ghost, you'll see the animation but 0 damage actually registers, and you can confirm this using your in game battle log). Yet you're advocating to use a hardcast Ruin 3 following the 2nd Akh Morn weave, meaning your final 2 GCDs would be R3 > R4. This means your final wyrmwave will ghost pretty much every time you try to do this.

All of this leads me to believe that you didn't even bother to play test your ideas, let alone do proper research on how to implement them

And based on our own rotation sim sheet, your opener actually performs worse than our actual openers by roughly 20,000 damage overall, and this is just personal damage comparisons without other party buffs factored into it (with ideal rotation timings, your opener would be even worse off).