Is it good?

I liked it a lot. The casting and the makeup and hairstyling work was spot on. There was plenty of insult humor and references to the classic sketches for the fans to indulge. Those tropes you mention are present in the film, unfortunately. Another downside is the heavy exaggeration for dramatic effect. For the ending scene, which was a recreation of the show's first cold open, they hold us in suspense when John Belushi doesn't come out immediately. If you watch the actual episode, Belushi came out on cue. I give it a 7.5/10.

You should definitely go see it. In a shocking twist the show fails and before the end of the first episode, they cut to Carson instead of airing SNL. There's also a scene where Milton Berle steals Chevy's girl and they have a confrontation where Berle tells Chevy he's a nobody and will never amount to anything. They do a scene that shows Chevy in the future as a drugged out bum begging for change. It definitely throws some curveballs at you and completely throws out those tropes. I didn't see any of it coming and those aren't even all of the ones in the movie. If you want a movie that you can't tell what is going to happen at all, even though no such movie like this exists, then this movie is the one totally worth checking out. Enjoy!

It’s good. Well edited, fast paced, and with good performances. Sharp screenplay and great score too. 8/10 is my rating.