definitely overhated in my opinion. before I start talking about the things i liked I'll get the mud out the way. there were a lot of parts of stormblood I really did not like but as an overall experience? i like it just as much as Heavensward if not more..... yeah....
strormblood suffers from really low lows and really high peaks and a bunch of bloats in the middle. the character set for this expansion really was unremarkable and lackluster and didn't really deliver like HW did. the pacing also was questionable at best.
some parts of the expansion were wholly uninteresting and felt uninspired. but I do know of the development issues so I'll cut it some slack

with that out the way....
music? PEAK
worldbuilding? PEAK
politics? PEAK
Bosses? PEAK
They really delivered with this more than HW imo
the themes that stormblood was supposed to tackle were tackled very well in my opinion. guilt. redemption. hardship. perseverance.