Just got back from watching the film--while I certainly think it has its flaws, overall it exceeded my expectations, and was a fun experience with a lot of heart and some interesting twists and turns:
Starting from the beginning, I did think the Corellia scenes were a bit slow. There wasn't much depth to them, though the scene where Han and Qi'ra are separated was well done, and I love the origin of the name Solo.
The war scenes where Han meets Beckett and his crew were fantastic--I loved the gritty, intense warfare and the atmosphere of chaos that contributed to Han's desertion. I also enjoy the way Han met Chewie. The train heist was a fun sequence, and while I wasn't emotionally moved by the deaths of Val and Rio, I was surprised, and I think the intent of their deaths was to evoke a feeling of peril, which did work for me.
Dryden Vos was a very interesting character, and I think he should have had a greater role in the film. His relationship with Qi'ra was intriguing, but I do wish it was explained a bit more, as that would have made her betrayal of him more impactful in the end. Donald Glover was spot-on as Lando, giving a near-perfect impression of Billy Dee Williams. L3 was also fun, and I loved how her integration with the Falcon's systems explains the ship's unique "personality," which was referenced in the OT. The Kessel Run sequence was really fun and nostalgic, and made all the more exciting by the addition of a truly horrific monster that will haunt my nightmares.
I wasn't entirely sold on the characters of Enfys Nest and her marauders. I felt like they were less developed than they needed to be, making their alignment with Han and his group a bit hard to believe. I very much enjoyed the numerous double-crossings of the final battle sequence, as many of them were unexpected (even Beckett's, which I should have seen coming from a mile away). Han's cleverness was really well used in this scene, as he made his lack of deception an actual deception, which was fun.
Unfortunately, due to the stupidity of Internet headlines, I had the Maul cameo spoiled for me ahead of time. Still, it was really exciting to see him on the big screen again, and he looked amazing. I adore the fact that they included his signature lightsaber from Star Wars Rebels, and that Sam Witwer was brought back to voice him, along with Ray Park to be his physical body. I really hope that they develop this in further films, as Maul is a great character, and deserves a greater film presence to counteract his pathetic role in TPM.
Overall, I was impressed by Solo. I thought Alden Ehrenreich did a fine job as Han, capturing his humor and rebelliousness, but also his inner goodness and heart. While this film is definitely not the greatest Star Wars film, it is far from the worst, and I think it deserves more credit than it's being given.
EDIT: I also now totally understand why Darth Maul was released as a CCBS figure alongside the Solo sets. To think, they were telling us what to expect all along! Definitely getting the vibe that more of Maul is on the way in the near future!