Open Question: USPS Form 4232 "Rural Customer Delivery Instructions"?

We just moved into a new house and despite the fact that we already informed the postal service of our address change AND put our names inside the mailbox, they still want us to fill it out. The form basically asks us to enter all the names of people who may receive mail at our address. My only question is, is this exclusive? We're renting and we are going to include our landlord's name but we're also planning to get a roommate so if we don't include that person's (who we have no idea who yet) name will they not get mail here? Also, the post man spelled the name of our street incorrectly. If he's they're so concerned about us getting our mail, shouldn't they spell that right? They also crossed out the entire section about where to put our parcels if they don't fit in the mailbox (anything over the size of a box of girlscout cookies). I guess I just want more clarification on what that means and also where to get a new form since the first 1/2 of this one isn't filled out right