Like most newer designed turbo diesels, they use oil pressure to fire fuel injectors under pressure. They use exhaust gas to maintain EPA requirements. This includes the 6.0l. And as you concluded, there are other inherent design flaws on the motor as well.
The aftermarket can support the 6.0l owner with a variable of options to turn the expecting problematics of the engine into no concern. EGR deletes, coolant filters, remote oil cooler/filters, air intake kits, etc. are all readily available.
I recently installed a delete kit due to the rupture of the heat exchanger. I also added a by-pass micro-filter kit to minimize oil contanmination. With the delete kit, the upgrade Ford oil cooler was installed as well. I didn't install the coolant filter kit yet, as the system was flushed during all this work. I do have to add a tuner to remove the EGR codes from being produced. At that time, I'd like to add gages for the EGT, oil and trans temps.
With the delete kit installed, I was hoping to see some mpg changes as well as throttle response. Nothing is really showing yet with the first 1k miles.