More of the same, maybe not as good. I know the original was very entertaining and ripe for a series of movies, but I personally didn't really feel the NEED to see more of this group.
Perhaps it's unfair to complain that this movie was more of the same- almost three years ago I called GOTG a "colorful and funny space adventure" and this is equally colorful, funny, and adventurous, but not different. I imagine if they'd released these movies in reverse order, I'd like this movie as much as I liked the original film in 2014. Does that make any sense?
Unfortunately for the movie, I bet it would have been funnier in a full theater, instead of the mostly-empty weeknight at the Belmont Studio Cinema with Adam.