AST should have one default and one toggled sect

[Rongway]

The problem is that if diurnal is the default, there would be no animation for it. You could have one for activating nocturnal, but deactivating it (to get back to stanceless = diurnal) would probably have no animation.
But we lost so many nice animations already that it doesn't really matter anymore anyway.

This is easy enough to handle as follows.

Lv30 Trait: Sect Mastery
Automatically activates Diurnal Sect when changing your job to astrologian.

[Precedent: Auto Prospect (MIN), Auto Triangulate (BTN), Auto Fathom (FSH), Auto Sneak (MIN BTN FSH), One with the Mountain (MIN), One with the Forest (BTN), One with the Ocean (FSH)]


Lv30 Action: Diurnal Sect
Adds Regen to certain actions and removes Nocturnal Sect.
This action shares a recast with Nocturnal Sect.
This action cannot be used while in combat if you are under the effect of Nocturnal Sect.
Activating Diurnal Sect a second time does not remove the effect.

[The last line becomes moot at Lv50 because Nocturnal Sect replaces Diurnal Sect when Diurnal Sect is active.]
[Even though Sect Mastery would automatically activate this ability, it must still be available to use manually at Lv30 so it can be turned back on after unsyncking from a lower level.]


Lv50 Trait: Sect Mastery II
Changes Diurnal Sect to Nocturnal Sect while under the effect of Diurnal Sect.

[Precedent: Nascent Chaos (WAR), Enhanced Kassatsu (NIN)]


Lv50 Action: Nocturnal Sect
Adds a damage-nullifying barrier to certain actions and removes Diurnal Sect.
This action shares a recast with Diurnal Sect.
This action cannot be used while in combat.
This action can only be used while under the effect of Diurnal Sect.
※This action cannot be assigned to a hotbar.


Then Diurnal Sect is the default, and at 50 the Diurnal Sect button becomes a sect toggle button, with animations.
Also, if while syncked below 50 you forget that you don't have Nocturnal Sect, pressing the button to switch won't dispel Diurnal Sect and leave you wondering why none of your Aspects are working.