beauregard could have done Lindbergs job on The Jim Henson Hour (although dave goelz did perform digit and lindberg often had to help fix digit). In muppet treasure island, he could have been seen cleaning the deck. he should have been in the muppet christmas carol, either in the crowd, or at fozziwigs christmas party (either as a guest or as a janitor). he could have helped the bookkeepers, or he could hav ebeen at freds christmas party.
in the muppets wizard of oz, he could have been seen packing things into the van (it would have been more appropiate for beauregard and scooter to have loaded things instead of rizzo and bean). or he could have been one of the flying monkeys (they didn't seem very smart in the first place, so why not? hmm.. andy, randy and link could have also been flying monkeys... link in a role like johnny fiamas, and andy and randy as flying monkeys only because miss piggy is their aunt). or he could have worked at emerald city.
as for louis kazager, I really wish he would have been brought back. how many times did he appear on The Muppet Show outside of Muppet Sports? (i know he interviewed the zuccinni brothers in the u.k. spot in the phyllys george episode, and he was in the lynne redgrave episode). the jim henson hour and muppets tonight both took place at tv stations.... there could have been sports-related sketches. he could have helped gonzo host the episode where the muppets found gary chuenga. Louis kazager could have provided sports commentary in the dipping sticks Pizza Hut commercials.