having been a massive judge dredd fan as a kid i too have a thing for the arbites. i remember drooling over the models released during 2nd ed and thinking how cool they were.
i don't know much about the list side of things but i'll be on standby for the modelling. what are you planning on basing the standard troopers on? the necromunda enforcers or converted plastic somethings?
something that just occured to me...you might be able to get away with using the rules for arcoflagellents to represent a pack of cybermastifs if you feel like it.