Some idea about AST sect swapping
I think same as Dev, Swapping between sect in battle for shield and regen that can stack with WHM regen/medica is too OP. Then, what do you think about let them can swapping sect during battle but limit their aspect skill can't stack together same as Aspect Benefic and Aldoquim can't stack on each other and themselves. For example, when casting Noctunal Aspect Benefic/Helios on Target that already have Diurnal Aspect Benefic/Helios, the newer effect will replace old effect. This will make AST can't keep shield and regen in same time but make them more versatile from sect swapping. If Dev need more limitation, they can add MP cost to each sect for make them suffer from mp drain when swapping to much same as DRK who switch Grit often. But I think when they can swapping sect during battle, they also have MP suffer from casting heal 2 times already. SCH have this limitation when call new fairy with addition long cast time too. If they need to skip it, they must sacrifice swiftcast CD for use with other skill in emergency situation.