The Nobodies (because thats what we'd be, and we could take Eales on as our Patron).
Nobodies' Mob (bit of a double entendre), or Nobodies' Army (as in, We're nobodies' "army", but we're Nobodies' Army and we're an army of nobodies)
The Macropod Mob - macropod being the genus to which Wallabies belong, or just The Macropods.
The Golden Maul
GoldRuckers
Radiki's Ruckers (and do the afro wig thing as a uniform. might be a bit lame when he's not/no longer playing)
The Dunning Dogs (could bark and howl for effect when a try gets scored)
Whats the deal with Troup 23 by the way?
HEY - What about G Troop - like F Troop (remember the old tv show?) Wear Army shirts, they are olive green or Khaki which is a bit Steve Irwin ish which works too or source a green on green camo t-shirt with G TROOP on it - with Yellow berets so you have an easy to obtain and cheap uniform that should look kinda cool. You could set up an Army rank structure that way too for Platoons in different cities/towns, State based Brigades etc, helps with organisational and administrative purposes etc. Would let the real keen ones take a leadership role in organising their local G TROOP Platoon or the G TROOP [State] Brigade.