Surprisingly, I actually enjoyed this movie.
Despite what the critics say, and despite the supposed lack of an all-star cast or appropriate dialogue, I quite enjoyed the plot. And for me, the plot is pretty much everything to enjoy about a movie, so long as everything else remains slightly above average or thereabouts.
In particular, the interpretation of a "true love's kiss" and the non-canon backstory as to why Maleficent turned "evil" is interesting.
However I think the film showcased far too many magical creatures that were hard to keep a track of.
So that's a 7.5-8/10 for me, not that I'm a film critic.
(I can already hear that crowd at Rotten Tomatoes calling for my head)