well, that's normal evolution, we can't expect him to stay the same for ever and ever ! he was first cute to catch up our attention, then now he's a "fashion icon" having his own style or whatever with the jackets and so on, and what's coming next !
the show is evolving too : the first one were just about pants and jeans then animal costumes, then now for this tour, we have the 2 or 3 changes then the animal costumes...
for the next album, he'll be fully "grown up" talking about style, who knows what he'll bring to us, and the animal costumes will (imo) be taken out of the show... just cause it won't watch the second album mood/universe... and people will complain and complain again "where's mika ???" because they don't like changes, especially when they're not the ones responsible for those changes... he's like "their little thing/brother/boyfriend" and sometimes, they give the impression not to like when he doesn't do what they WANT him to do... first the sara story "who needs a backing voice here, what is she doing ?" then now, nobody can say A WORD about sara being too "in your face" cause she's part of the band"... they were crying over Lorna and LGs missing, and now, they've had the LGs back... but for how long ?
they have to digest every changes... it takes time... but they finally accept them, sooner or later, because it's mika...
i'm certainly going way further than just the clothes suject, but i don't think i'm very far from the truth saying all that...