Just my thoughts on AST as an AST main all last expansion.
Ast is the busiest job. Full of OGCD's to hit. All of the OGCD's feel relatively good at 80 while doing 80 content. You are almost always looking for OGCD's to hit. the flow of ast is hindered whenever you have to hard cast Helios/Aspected helios or Gravity outside of lightspeed. Hard casting Gravity in dungeons is a frequent occurrence and it would be really nice if you could OGCD weave while gravity spamming. Sch has a wonderful instant cast AOE that lets you use all of your fairy abilities and aetherflow while continueing to aoe but Astro who has to use OGCD's more frequently than scholar has to stop using gravity in order to throw out dps cards or a heal. It feels wrong.

Additionally turning your main cards into minor arcana feels like an unneeded step at this point. If we have the seals we need why can't we skip the normal card draw and go straight to minor arcana? It would cut down on needless OGCD's when we know we are going to just do minor arcana.

Oh and horoscopes duration should be longer. like Plenary was at the end of stormblood. Its initial duration is so short you have to really hit it shortly before you need it, which usually means you have to work around needing to horoscope instead of working your horoscope around your other OGCD's. One clearly feels worse than the other would and I think a longer horoscope buff duration would fix that.