Rehashing a lot of rick and morty with alien characters that while funny in places, often come off as nothing more than a knock off at a time when Rick and Morty needs more attention and care to avoid being stale. The main B story (that ends up being the A story in a couple of episodes) about the wall is so much better and more interesting that the aliens should be used more as a framing device instead of a main plot. Imagine if fred savage being read a book by Peter Falk was 90% of the princess bride, there you have solar opposites.