I'll say it again here, but it's impossible to make Astro interesting as long as they're homogenizing every other job as well. Imagine if we had actual jobs with MP managment, proc-based, priority/cooldown/oCGD based, bursty, etc. Then we could get better cards as well.
You could give increased MP to a BLM to fit more Fire IV, or Dark Knight for more Edges, or WHM in a MP negative but more powerful DPS stance; increased proc rate and crit chance to DNC and BLM or even Samurai for boosted guaranteed crit hits; reduced cooldowns for GNB, MCH... and we could have minor arcana that wouldn't be a boring damage/heal but be modifiers to our cards to spread/extend buffs.
Sure, it would still end up being a priority list for every card like it is now but it could be so much more dynamic and satisfying. You notice MNK in riddle of wind? You give the increased autoattack to them instead of the usually faster Viper. And I want cards to be felt by jobs who recieve them as well! Imagine getting a reduced cooldown cards on GNB and realizing you can fit 2 Gnashing Fang combos into your burst.
And they STILL refuse to unlock glamour when it would solve most complaints coming from player who want the job's look but not learn how to play it.Because god forbid a class be less popular bc it's got a higher skill ceiling. All for the sake of aesthetics, my god.