Joan Bushwell tip
If you get Joan, work through her questline. Part 3 asks you to send Homer on one job, and ten Springfielders on another. DON'T SEND HOMER! It's a premium, 4 hour job for just about everybody in Springfield...I had less than ten characters left over, apart from the ones already volunteering at the zoo, and I have almost everyone. The task pays out at a premium rate for EVERYONE, and it's FOUR HOURS. I wish I'd realised in time, but I sent Homer first...