I thoroughly enjoyed this. Nowhere near as good as the original obviously, but it was a ton of fun, had good pacing, the songs were fun and the performances were great.
Aladdin and Jasmine were fantastic, perfectly cast in my opinion. Jafar was okay. I was fine with a totally different portrayal of him, but the problem I had was that the movie sidelined him to focus on the Aladdin/Jasmine/Genie relationships. So he just wasn't in it very much, and his evil-ness came out too quickly at the end.
Will Smith is basically just Will Smith, which is a good thing. He's funny, charming and fun to watch. I was surprised by his singing -- it's not great, but it was better than I expected. The only issue I had was that the CGI is just... okay. The way Genie moves his arms/hands is so strange, it just always looked off. Like they were over-animating his movements to make him more cartoonish. But if they're gonna make him look photo-real, give him realistic movements too! When Disney puts out movies with amazing CGI like Jungle Book and Lion King, it makes the lower-quality CGI (this, Beauty and the Beast) stick out like a sore thumb.
"A Whole New World" was fantastic and gave me chills.