What are my chances that I may speak with the postmaster about making sure my packages don't get dropped off at my front door/porch in an apt building that has a HUB on the premises where all packages suppose to go to?

You can basically, always fine someone, to speak with. There's always someone running the ship. Don't give up. Call, write, or drive to a Post Office, and set up a appointment to, speak with him, or her, asap.

Slim to none unfortunately but there are other avenues to assure that doesnt happen try talking to your mail man they always have the best advice