By law, WP mustppoint someone in the district an appointment, IF fully qualified. Who that appointment goes to is determined by the kind of slate that the MOC uses.
In your specific case, IF you are the only on the slate that is fully qualified, then WP must offer you the appointment.
I think your concerns stem from this prior post in the thread by Spud: The difference is in that situation, someone was offered an appointment to fill that MOC's slot and turned it down. Spud was saying that if an appointment is turned down, then the SA does not have to go to the next person on the list as they have already offered the slot to someone.
If I understand your situation correctly, no one in your District has been offered. One candidate removed themselves from consideration, one is medically DQ'd and therefore would not be offered an appointment unless the wavier was granted.
If the medically DQ'd candidate was #2 on the slate, WP can't determine the slot winner until the waiver issue is determined.