While Maleficent was entertaining (and Angelina Jolie does a fantastic job), that movie was a bit of a mess. It bends over backwards to try and make the villain from Sleeping Beauty not a villain, and it just doesn't work. It abandons the plot of Sleeping Beauty halfway through, and simply forgets the stuff that it had set up.
Jungle Book was okay, but not as great as the animated version. It was really weird how they left out Kaa's song, and then put it over the end credits. Something clearly got left on the cuttingroom floor there. It was nice that they included some of the songs, and the CGI animals are really well done, but ultimately every song is worse compared to the original. Bill Murray does a fine Baloo, but he's not a very good singer.
I have yet to watch Beauty and the Beast, Aladdin, Dumbo or the Lion King. But I expect they will share the same flaws.