Well, considering I'm a fan since 2016 I never witnessed any of the big meltdowns(desert performance, vegas renewall, Miah Jean, Perfume, Femme Fatale), so I'd say: The way the Glory era went(the timing, Glory debuting at #3, low sales, mess/no promo, scrapped MV and replaced by a mess MV, Britney and her team not giving a single **** of how the era was going, 2 singles only, no promo for SP and etc.), it was a big mess, even the simplest things were done wrong. And that's it, actualy. I've never had a big meltdown, like being upset all week, handling my fan card, or shaking from anger. There's still time for Britney to deliver me a meltdown, though.