Hey Cory,
Ken recently responded to this idea in another thread (whether it was on MC or Palisades or someplace else I can't remember and can't find it...)
Basically, any pack-in character, no matter how small or generic, like Penguins, Chickens, Rats, etc., is still a Muppet Character. Because of this, there's an additional licensing fee to make that character. In addition, there's a sculpting fee involved in making the characters, but not with most of the accessories. Therefore, Rowlfs big-A-- piano cost less to produce and include with the figure than Camilla does for Series 5's Gonzo.
I would LOVE to see some generic penguins, chickens, or rats thrown in as pack-ins too, but it sounds like it would prohibitively expensive. I may end up buying 3 S5 Gonzos and making slight modifications to two of the chickens to give myself more of a flock.
I'm wondering though, if the cost of the sculpt/license could be spread across several series if they used the same penguin sculpt as a pack-in for two or three different figures; not sure how that would work.
Quinnie Quinn Quinn