How to fix the Postal Service

Granted I don’t have savings associated to my plan, but I would think that this would cut their deficit significantly ($8.5 Billion). The main issue is the laws/rules that the post masters must follow that basically do not let them manage their branches. So if they had their hands untied and could actually try and run a successful business the American taxpayer could cut out 8.5 billion + interest.
The second issue is working 6 days a week. I think allowing them to cut out a day or two on deliveries based on each areas needs, and not on a national level. If the place is profitable they can continue to run 6 days a week. Local management is the key. It makes no sense to come down with a national policy.
The third issue is that everyone has a mailbox in front of their house. I’m confident that this isn’t a given right or need. All new neighborhoods should have 1 central location for mail, like an apartment complex. This would decrease the number of drivers needed to deliver the mail. This could be applied to rural communities so that they wouldn’t lose services, a big concern to politicians looking for reelection.
What are your thoughts?