The first half being very well drawn and paced means that by about 80 minutes in everyone starts to panic that there isn't enough time to get to the big hollywood CGI showdown fighty bit, so from the point we reach the good bubble midget City, or whatever it is, character development, or even some passable character introduction is completely out of the window. Which is possibly a good thing, because all the tinkers, tailors, midgets and....more midgets, all seem achingly boring and 1D anyway, but we need them for the final bit, so we're thrown some dull exposition stock characters, complete with
Magical Negro...TWO in fact. One of whom is a midget.
The major problem with this film though is the Wicked Witch.
I'm not blaming Kunis for this either. I'm a fan of Kunis. Not for any acting reasons obviously, that would be insane, but she plays a perfectly good bum in leather trousers for the first hour of this film, and does seem to be genuinely trying to give her best stage school performance as
The Mask for the second half. It's not her fault they took the daft & bizarre choice to keep her normal, far too distinctive voice either. She just sounds like that.
No, the trouble is that someone, somewhere, at some point during the writing and pre-production process decided that if this film was going to sell, it needed more Wicked Witch in it. The Wicked Witch had to be guaranteed to be in at least half of the film, otherwise the idiots that pay his wages (us) wouldn't stand for them not mining all the comercial merchandising possible out of this property.
And so thus it is that a film that had built up quite well to the midway point, beginning to flesh out a plausible origin for all the main iconic protagonists, suddenly veers wildly into plot desperation and rams in a completely OTT and implausibly hurried transformation scene where Mila Kunis turns from sweet natured naive girl, to cackling green racially insensitive nosed Witch in the time it takes to unconvincingly fall behind a table.
It's a shame because Kunis was playing the sweet natured, naive bum in leather trousers quite well, and I could've believed the transformation had it happened, as it quite clearly should've happened, at the very end of the film. Especially since
They were going to make a cocking sequel anyway.!!
Remember how some people got annoyed that they spent the whole of the Dark Knight building up how Aaron Eckhart became Two-Face and then killed him as soon as he did? We this is the complete opposite of that. It's not a good trade off.