I only realised it now, but the DreamFest cards are basically like the "upgrade" version of their initial 3* cards???

Such as like how Pastel * Palette was based on sweets or Hello Happy World! is circus-themed, Poppin' Party is more or less techno/cyber-ish, I have no idea about what kind of costume Roselia is, but it looks pretty similar with all those capes, feathers and rose petals,

I am not too sure what Afterglow is based after, but I can recognized some elements from Moca Dreamfest card and her band's inital 3* costumes! Such as like their badges and the scarf thingy they tied around their waist!