The issue of memorization vs reactive is something I've noticed since I started clearing savage in Stormblood.

Having to memorize a long sequence across 10-14 minutes is getting tiresome. Memorizing "the dance" for all the bosses and seeing the party execute it does provide it's own level of satisfaction and can be really fun to watch and see after hours of dying and mastering mechanics one by one.

That being said, I wouldn't mind a bit more reactive gameplay that tests my reflexes here and there.