I've only watched half the first episode so far, but this features an Alice who really does things. A lot of the asylum scenes seem reminiscent of American McGee's Alice, and she's just the sort of dish -- erm, girl -- to spice up a story to perfection. Not like the weak Alice of Tim Burton's film, this is a girl who's willing to muck in and fight, to take charge of her own life, to be more than just a damsel in distress (or a damsel in dis dress, although she does wear some pretty ones).
CGI in anything relating to Wonderland is of course going to be critical. I've seen the full gamut - openly cheesy, nice try but the tech's just not there, fairly good but flawed - and this is far from terrible. I wouldn't expect perfection, partly because everyone's idea of perfect is different. It's easily adequate.