This sounds harsh but I don't think they did a good job. The raids were very, very bland, and Euphrosyne in particular is the most boring alliance raid, possibly even more boring than Syrcus Tower in terms of mechanical complexity and innovation.
Honestly, alliance raids have been bad since after Orbone Monastery. I don't what happened between Stormblood and Shadowbringers, but boss mechanics in general started having way too much focus on animation cues and arena cleaves while not caring that there are 23 people in the group, they almost never use that fact to create mechanics.