What is it about Sam Arrow that gets that variant in merchandise, while other MTI variants don't?
Sam Arrow was one of very few Muppet Treasure Island action figures put out by Palisades, and that one even had an exclusive variant (he was one of the few characters in the movie to have any kind of possible variant). Of course part of that could be due to Palisades' desire to put out variants of some characters before the official versions, combined with the fact that they didn't get the movie license until after most of the first four series had been sculpted (and most of the main characters would have been released). And we did get a few more MTI variants.
And then the last series of Muppet Vinylmation figures included Sam Arrow, but not any other movie variants (was Piggy as the Statue of Liberty really a better choice over Benjamina Gunn?).
And now it looks like this Muppet Treasure Island-related stage will have Sam Arrow but, as far as I can tell, no other movie variants. I could be wrong, but looking at that still, it looks like Kermit, Piggy, and Fozzie won't be the films variants. I wonder if Clueless Morgan, Mad Monty, or Polly Lobster will be added to the game.