Well....2) and 3) are kinda' iffy. Reasonably maintained engines shouldn't be failing at low miles, and engines with nothing more than what's outlined in the manual are lasting over 100K miles.
The thing that intrigued me about that thread was it went a long way to describing why some engines were failing while others seem to be doing just fine. Some victims were adamant about doing regular oil changes, yet their engines failed early anyways. Once the relief valve sticks, sludge follows, engine fails. The initial inspection would show sludge and the customer is automatically assumed responsible for the problem. Any signs of metal particles with a more in depth inspection would be assumed (or easily blamed) to be the result of the failure due to sludge. In the end, it's just a matter of luck whether your engine has this manufacturing defect or not.
And even if Chrysler is aware of the actual cause, the last thing management would want to do is admit it. Think of the cost of recalling every 2.7 made and having to remove the oil pan for inspection, and then replacing the engines with the suspected fault. Attorneys would have a field day if Chrysler acknowledged the defect due to poor quality control.
It's to bad that more people didn't have accurate oil temp and pressure gauges on their engines to watch what happens as the engine fails.
But I digress, let's get back on topic. The extra filtering and cooling can only be good for your engine as long as you don't do anything to significantly reduce oil flow to your engine. And I just was trying to give you a simpler and more cost effective solution.
Anyways, good luck in whatever you decide to do.