Here's the situation as I see it. It is still possible although unlikely the show will be renewed. So in order of likeliness the options are:
1. The show is renewed either for 12 or 22 episodes
2. The show is renewed as a "limited event" series with 6-10 episodes
3. The show is renewed as a mid-season replacement 6-13 episodes. So the show would be filmed, but may or may not air based on the success or failure of other shows. If they do film any episodes I am sure they would turn up somewhere maybe not ABC but somewhere.
4. They cancel the show outright.
If they are cancelled it does not mean we will not see the Muppets again. They can guest star on other shows. Jimmy Fallon and Tom Bergeron love the Muppets and have had them on their shows many times.
The Warburton's commercial shows what a good Muppet commercial can be. Even the No Room for Boring car commercials were fun.
Viral Videos. Bohemian Rhapsody, Flowers on the Wall, Jungle Boogie etc were all great. Plus the promised Pigs in Space videos yet to come.
Speaking of the Pigs in Space videos: I would love to see them do a serialized version of them. Have the story told in three parts. Each video would be 5-7 minutes long and end with a cliffhanger. The second part would air the following week and the conclusion the week after. On week four all three could be released as one video. The focus would be (obviously) on Piggy, Link and Strangepork, but surely Dearth Nadir would make an appearance at some point as could any of the Koozebanean characters, Annie Sue could also be a pig in space, and there's always room for a cameo from Kermit or one of the other main characters. Even a possible human guest star. Disney owns Star Wars too maybe Carrie Fisher? Or Luke Skywalker's talented cousin Mark Hamill could return.
In short, yes we should lobby and hope for season 2. If it is not in the cards then we should lobby for quality Muppet content on other platforms. It's an established brand with a devoted core following and a large if fickle tangential following. All of whom like to buy things. Disney knows this. The Muppets are surely not going back into the vault.