Sorry, I thought everyone knew this, I didn't pay attention to the connotation of "cancelled", since it was still cancelled. (Like, if a band's show is cancelled, it's often because of them). What I was getting at is that Seinfeld had a phenominally long TV-show run, which is extremely demanding of anyone, let alone its eponymous main character. He did not then do another long-running TV show, which would have simply been this unthinkable commitment. (This is how I'm interpreting it).

I'm not saying one causes the other, but Seinfeld was very good with his system, it led to a very, very long-running TV series, and he didn't follow it up with another series.

How or whether this has any effect on any projects you might do you have to decide for yourself.