Why would you need to modify the route for that???
https://www.beverlyhillscarclub.com/1964-rolls-royce-silver-...
Interestingly a mate back in the 90s used to g to the US from Australia and ship back container loads of classic British cars and car parts sourced cheap in the US at a time when that fad was on the wane there and bargains could be had that sold for a good markup in Australia.
My regular delivery man used to have some kei sized thing with a roof box filled to the gunnels with boxes.
He has now invested in a larger car.
I presume you have these in the US?
So there's a thing of me wanting to be able to go over there and get it ASAP if I want it, and also not needing for somebody to come to me to give it to me (it's close enough to me to not warrant that anyways!).
I understand legitimate needs (or wants) for people to get things hand delivered. I just feel that I am able and willing to just go pick stuff up myself by default.
In a magical world post offices would have some sort of mechanism like just texting people that a package might arrive on a certain date, and maybe you can hit a button to request earlier delivery. Unfortunately the existence of that button requires restraint from the general population to be of any utility (and charging for the button press is a bit gnarly).
Perhaps in rural populations, people would be more reasonable though (especially if downstream of this system you actually had deliveries happen _when they are predicted to_)
I'd like to tell them: Pick a day next week, and deliver everything together at the same time. Make it a bit more expensive to let the customer choose, and market forces will balance things out.
They could hold off delivering to a group of addresses (a street or an apartment building) until they either have a priority letter, for which a premium has been charged, or a non-priority letter is reaching the deadline, which here is 5 days. At that point they deliver everything that's waiting.
Honestly, it makes perfect sense fo the USPS to go with a "low-volume turd": they apparently don't want something off-the-shelf, they want something custom for their unique needs. Who's going to build this for them other than a government contractor? You mention the Ford Transit, but the steering wheel is on the wrong side and it probably has some other problems since it isn't specifically designed as a mail truck. You might suggest here that they could contract with Ford to make a custom version, but look above at what I wrote: most companies have no interest in this, and will simply turn down any government contracts, and I imagine Ford is the same way. Why deal with the hassle? For most companies, it's simply not worth it, otherwise they would be actively bidding on government contracts. So a Ford vehicle probably simply isn't an option here, and the USPS's only options are low-volume turds made by defense contractors.
In rural areas independent people bid for routes. So they provide their own vehicle and are independent contractors.
I have lived in a couple of places (in Europe) where I often had to go to the sorting center to retrieve parcels, due to some customs-related issue or whatever. Staff generally weren’t happy to see me there. The sorting centers didn’t employ dedicated customer-facing staff, because there just aren’t enough customers coming in. And that means that I was either distracting someone from the tasks they are usually assigned, or I was at least shattering the peaceful environment that they normally work in.
There's a sort of comforting chaos to deliveries in the downtown area. There are loads of small centers, deliveries happen on foot for the major delivery companies in many cases (people just pushing around carts). And the missed delivery slips just have the cell phone number of the delivery person that you can call and be like "yeah whenever's good for you, I'm home again". I imagine all the fancy logistics happens right up to the delivery centers, and then it's basically YOLO mode.
If you know it's being delivered through USPS, have it delivered to 'general delivery'[1]. Problem is Amazon and many others don't let you choose your shipper and most post offices (reasonably so) don't accept general delivery from 3rd party carriers.
Alternatively, ship it to a UPS store that offers 'Package Acceptance' service. They charge per-package - usually $5-$7 though I've seen some as high as $15. Or you could open a UPS POBox if you receive enough packages to make it worth the cost.
Though OTOH I don't know how well such delivery trucks would handle less maintained roads.
(Aside: I've always wanted a way to just signal to delivery companies that I'm fine picking things up, just tell me when they arrive at the sorting center. I live close to them, so it's easier for me of course)