I wonder why John Lovelady took over the role from Jim Henson. Jim henson performed him in the secodn episode, which was shot as a pilot, so maybe Jim Henson was going to perform him but then decided not to, possibly either because he disliked the character, so that John Lovelady could have another character, because he often performed Rowlf when Nigel appeared, or some other reason.
It is odd that, after the second episode, Nigel didn't talk again untill really late in the season. I have noticed that in all of Nigel's major speaking scenes where he's performed by John Lovelady, Jim Henson was busy performing other characters (Kermit and Rowlf).
It is weird that Nigel wasn't more involved backstage. He was the shows conductor, so it would have made sense for him to be involved in major storylines every once in awhile. Maybe he could have complained about working conditions, or worked on a certain number, or prepared for a big musical number, or perhaps helped Fozzie, Gonzo, Scooter, or anybody else with their act. He also should have been in some discussion panels and At The dance segments.
I often consider him to be John Loveladys main character, yet as a performers main character he didn't do much (though the same could be said about Kathy Mullens main character, Gaffer, or Steve Whitmires main character, Rizzo, in his early appearances). John Lovelady should have had some major backstage involvement. The other first season performers had at least one main character.