HGM,
My opinion stands. I certainly don't expect to be lectured about my choosen job profession. Save that lecture for the fresh out of high school tech who loses his rear end on his first major warranty job.
I don't have the numbers in front of me, but I suspect the 6.0 has cost FoMoCo more warranty dollars than the 7.3 ever has. Remember the 7.3 Powerstroke was around for 9 years as opposed to the 3 to 4 years of the 6.0

As far as the large truck comparision, last I checked they use the same 6.0 engine. In large trucks we don't even try to sell the 6.0. Instead we push the Cat engine.
Would I own a 6.0? You are joking. Of course not. My choice would be the V10. The owners of 6.0's that I talk to say about 9 mpg while towing. Of course everyone has this amazing 6.0 that gets 21 plus mpg.
I'm not the only diesel tech here, but all of my coworkers agree about my opinions. As well as the message boards on PTS. Have you looked at them lately?
Some of the commercial accounts we have here are now going to the LCF {low cab forward} verhicles just to get away from the 6.0. Of course they do give up 4x4.
My suggestions for the engine? What difference does it make? It will be gone.
I understand that being a engineer sometimes it is hard to admit when something looks good on paper and fails in the real world it is hard to swallow.