Snl/ncaa
The problem with SNL is the same problem with a great college basketball program. Every season there's a lot of talent but some years it all seems to gel and they develop a special chemistry. In basketball they win a championship but can't repeat their success the next year because half of the starting line-up uses the team success to launch themselves to "the next level" and they enter the pro draft. Some players go on to remarkable careers and some fizzle without that special chemistry they once had. Meanwhile, their college team goes from champion to rebuilding project.
With SNL, I think, some people really hit their stride, along with the rest of the cast, and the show excels but it's hard to keep them together. They want to take their act to the multiplex. For some of them it's the right choice and for others they can never repeat that magic on the "next level". Then the show is forced to "rebuild" and develop a new special chemistry before the next movie career migration.
All of this is happening faster and faster now with the lure of big money and fame. It sometimes distorts rational thought and certain athletes or
"Not Ready For Prime Time Players" jump into the big pond before they're ready
and sink.