It's been a while since I read it, and honestly, I can't really remember that much about it. Lucifer has that effect on me: it's always very, very good, and I probably don't understand it all that much. But Carey writes Lucifer, as a vastly superhuman intelligence, so well, that it's great regardless.
This, Carey says, is a character who sees the entire universe as tools to be used. For all Lucifer's suave sophistication, every now and then Carey has to remind his readers that Lucifer is a monster: he'd burn up entire planets just to light a cigarette, if it suited his purpose - or if he didn't imagine that he'd find said planet useful in the future.
From what I recall of this one, we have more Fy Presto, still trying to get rid of her cards, and more Elaine Belloc - suffering a serious case of indigestion from acquiring her father's demi-urge. Her father, incidentally, is the Morningstar's younger brother, Michael.
Basically, Carey's taking Milton further: Lucifer has his own Creation to rule, and given what he is, this is how Carey sees him doing it. Here, Lucifer isn't Milton's evil monster, though - he's just disinterested in servitude.
If you liked Sandman, you should try this. Except, if you liked Sandman, you probably already have.