I wouldnt say that Steel Avenger and Chaos 2 are rusting in garages. They usually make guest appearances at Robot Rumble as do John, Jackie and George. And as for Cassius 3, although it may not be there, Rex most certainly is.

Its not just a lack of TV that prevents some people (although not all) from being on the live circuit, they have other commitments such as jobs, families and mortgages to take care of first.