Yeah, but in the WoO you can't really keep the Scarecrow out of the movie like you can Capt. Smollet. Besides, Rizzo was a munchkin they just naturally have smaller parts.
Oh, and I think Rizzo being am ain charact on MT is what kept Kermit out of the host position. I think if we are to have Kermit as a main character and host again Rizzo needs to take a back seat. He could be used mostly in comedy sketches and stuff on a new show, but I doubt we will see him and Kermit interact much without Steve doing a lot of dubbing.