Even though some new characters have been built to compete to be americas next muppet, I still hope that they all get to appear in future productions. The Jim Henson Hour only had a small number of new characters who were used regularly in other productions, and Muppets Tonight had more who reappeared but the amount of characters who have returned seems to have been reduced recently (and there are some muppets tonight characters, mainly Seymour and Nigel The Director, who I am disapointed over the fact that they weren't used again).
I think that these new muppets are performed by newer performers, or ones that don't have many regular characters. That way, they can all interact with any classic character and the shows producers wouldn't have to worry about dubbing voices or anything. Maybe John Kennedy, Tyler Bunch, Ricky Boyd, John Tartiglia, Drew Massey, and Alice Dennon Vernon should all have a character of their own (and yes, I do know that most of them have performed at least one classic character, especially in The Muppets Wizard of Oz). Maybe Eric jacopson should get an original character of his own as well.
I wonder if any already-built characters (like a penguin or a frog) would be used as a "contestant", but with a name and a personality (and possibly some new visual features).