You've either got to find a way to make your continuing characters insteresting without making them maudlin or overwrought, or you've got to put more emphasis on the suspects.

Either I will find a way, or I will make one.

You've got to find some way of saying it without saying it.

I tend to come up with people more than situations - most of my books start with a character.

My husband used to take care of the business part of this, and after he died I found I wasn't really any good at it. I hate remembering who owes me what and bugging them if they haven't paid me.

If you make it a game, gamers will play it no matter what your motivation is in making it.