Alan Gunn’s review published on Letterboxd:
James Gunn just took a $200 million dollar sequel/franchise enforcer/"Infinity War" precursor and used it to make the cinematic equivalent of a TV show's bottle episode. Nice.
Certainly not the sequel I, nor many people, expected for "Guardians of the Galaxy", and all the better for it. The structure isn't as tight and propulsive as the first's - while the "split the team up" conceit leads to some interesting character turns, it also results in a meandering middle act - but emotionally and thematically, there is so much more under the hood here. The best Marvel movies are the ones that acknowledge that convoluted plots and MacGuffin chases are secondary to character, and "Guardians of the Galaxy: Vol. 2" - essentially a 2 hour+ excuse for these characters to crack jokes, work out their issues, and lay their souls bare in front of each other - is a golden example.