I finally watched this a few days ago and haven't felt much motivation to comment on it because it's neither bad enough to complain much about or good enough to say much complimentary about. It's just a rather forgettable film. It's the first of these new movies that felt to me like it was just churned out. You could argue that Rogue One was, too, but, whether because the craze was still fresh or because its story is about something that fans have been very curious about for 40 years, it felt like it had some purpose. Solo just felt misguided because it was trying to copy Guardians of the Galaxy (even that monkey pilot seemed like a rip-off of the raccoon in GotG) and telling a story that most fans haven't ever been all that curious about.
It didn't help that a number of things didn't make sense to me. Why would Han already know the Wookiee language before meeting Chewbacca and why didn't he speak to him in it sooner? Also, Wikipedia says that 3 years passed while Han and Qi'ra were separated, but I certainly didn't get that sense from the movie. It seemed more like 3 months, which made Qi'ra's indifference toward him and sudden mastery of advanced martial arts seem rather implausible. Finally, Lando was made out as retired and someone who would never give up his ship; then, a few minutes later, he not only wagered it (not really, since he was cheating, but that should've been a red flag) but eagerly came out of retirement to pilot it for a bunch of strangers. Maybe the point is to show that he's not who he's reputed to be, but it makes the false character build-up and card game seem sort of pointless.
It also puzzles me how these new movies so aggressively push social justice (strong, heroic females and themes on animal, child and droid exploitation) while simultaneously employing unflattering stereotypes of black males as cowards, comic relief and habitual cheaters. You would think that the same people who are so careful to depict every female character as a strong, positive role model with nary a flaw would show a bit more care for the "role models" that they're leaving other demographics with.
Anyways, I was kind of surprised and amused that the movie left threads hanging (especially with Qi'ra) for a sequel. I know that it was originally meant to be a trilogy, but you would think that they would've sort of scrapped that idea when they had so many production troubles and confidence in the film tanked. It seems awfully silly now for the film to end almost on a cliffhanger when a sequel is unlikely to happen.