I could give an argument for this. I could go in with a logical or emotional appeal. But lets just keep this simple.
WE NEED MOAR CHARACTER SLOTS, THE SINGLE ONE WE CAN BUY IN THE BEE SHOP IS NOW ENOUGH!!
Also, barely related, but it would be nice to have an option to see our character without their uniform on, since some of the options affect your body, and the only way to currently do this is to remove EVERY job from your list.