Everything you just stated reinforces my argument. The Pirelli's wear out faster because they are softer. They do not excel in the rain because of silicon content, they have more "rubber" per say. They cost more because of the high level of construction and still keeping weight to a minimum. They handle the extreme loads this truck can exert on the tires (Stiffer sidewalls thus a firmer "ride"). You do not need to go to the trucks top speed to benefit from that
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Keep in mind, as tires age (even a few years), the rubber will harden and loose the grip this truck requires to perform to the optimum levels. Comparing old Pirelli's to a new tire is NOT a valid comparison. I would replace the tires every two years or so even though they had great tread depth. I would easily sell the "take-off's" to others on Craigslist. When it comes to tire ratings on the side wall, you CAN NOT compare them from manufacturer to manufacturer. They ALL have their own rating scales. You can however, use them to compare one Nexen to another Nexen for example.
Granted, you drive a QC and a lot of owners will use them as daily drivers, so your suggestions may be good for that. However, when it comes to pure performance and handling, I utilized the stock tire. When it comes to all out grip, I'll take an RC with Pirelli's over another with any of the cheap tires on it and run circles around it. From hard acceleration, cornering, braking and high speeds, the Scorpion Zero excels!! I can attest to everything from 1/4 mile and achieving just under the 1.9 second 60ft. (@38 psi). Run slick's?!? Nope, not if you want to start breaking parts. Review some of the discussions on this forum to fully understand what's involved and damage that's ensued when running them. You sir, need to also remember that the SRT engineers did not ONLY build the worlds fastest Pickup truck, they built a BEAST that can deceptively out maneuver most sports cars (RC, not QC) when cornering through tight canyon roads and round-a-bouts in addition to high speed 90-140+ MPH sweepers on highways, the RC with Pirelli's can deliver.
Have you ever watched this? Remember, the RAM SRT-10 is the mother of all SRT's....
Cheers!