I keep running into Astro running Shields in Farm PTs as a SCH. (Why?)

[Kurando]

I heard that you can get bigger crit heals in Nocturnal

I remember correctly a crit Aspec Ben offers a 250% barrier of the amount restored whilst a crit Aldo is double the amount. But the difference being is SCH can spread that particular barrier, whilst AST cannot unless they use Aspec Helios (but then both that and Succor is 150%)

Personally I think the strongest barrier should stay active rather than be overridden, but then that doesn't fix the ASTs that are hell bent on not going Diurnal.