Why So Serious? The Joker Gang Necromunda/ Inquisimunda warband4

The Joker Gang in all it's vainglory. It's only the start but I wanted a group shot at this early stage. 

My dream is to have a 40K gang modelled up after each Batman villain. I've drawn up a list of things that I think would work.

Batman - solo Syprer. Games master design to equal gangs. 
Commissioner Gordon - arbites. Games master design is equal gangs. 

The joker gang - the jester. Cawdor Harley Quinn 
Bane - house Goliath/ pit slave
The riddler gang - Delaque
The penguin - xenos kroot. Human psyker with affinity for birds. 
Mr freeze - mechanicus (freezes subjects for testing) 
Killer croc - mutie
Two face - mutie/ inquisition? 
Poison ivy - inquisition? Rogue trader? Pirate? Psyker to control biology 
Scarecrow - drug dealing pirate? 
Cat woman - hired gun 
Night wing - hired gun
Robin - hired gun   

What you think? Batman and arbites are there to handle gangs who get to far ahead of others.

What would you do differently? Do you plan to create any of these gangs? 

Paints used: Vallejo, Reaper Master Series, Games Workshop Washes, Com Art Medea Airbrush

Airbrush: Iwata Hi-Line HP-CH Airbrush

Paint Brushes: Rosemary & Co. Raphael 8040, Broken Toad Brushes