I give it a definite yes. It could be released a year from now. No matter what characters come out, there always have to be 2 big guns in each wave. They are just about used up by wave 7 so special versions of Piggy and the gang will need to be included to help support the line.
Hey, that would make a cool wave 7: Usher Scooter, Standard Rowlf, Johnny and Sal. That's a balanced wave. Wave 8 could include Biker Piggy, Standard Sam, Bean Bunny and Uncle Deadly Wave 9: Photographer Gonzo, Smollet Kermit, Lips and Marvin Suggs. It's about an even pacing of 2 big guns and 2 lesser known characters.
Anyway, just the ramblings of a frogboy.