When we met in small groups last year, many instructors said they wished the textbook had a brief introductory chapter letting students know why they are in 1120 and explaining what will be asked of them. I've taken a run at a draft and would be grateful for any feedback. Is this the sort of thing you're looking for?
You can read it here. You may have to log in to see it.
I'm used to having my work edited and probably won't get my back up or be hurt by constructive criticism. I really welcome collaboration on this project.
I'm going to try this chapter out on my 1120 students this week and will let you know how that goes. If you do the same, will you let us know how it worked in your class?