"complexity"?! Rick, I did this in the parking lot of my local Murrays Atuo. I had the following tools
Apple carving knife
1 pair of channel locks
Still only took my 5 minutes (less if I cut the short piece of 5/16 hose shorter the first time - cuz channel locks on hose clamps is a PITA)
I don't agree that capping off PCV is a good move here. First, what you describe is already on the truck (and on most stock turbo/SC cars), it's referred to as low idle PCV. The second line, with the valve, assures that under WOT vacuum (stock at the IM) or WOT boost (TRD SC at the SC inlet), there is enough vacuum to draw up the PCV valve ball.
If you really nerd on PCV systems for a while, you will understand that 'simplicity' is misleading. Too much vacuum at the wrong time, you suck raw oil, too little vacuum at the wrong time, you will follow with too much at the right time. With no PCV under extended boost, you can blow out engine seals regularly. One's best hope is that the rear main isn't one of the victims here.
I'm not sure I understand the confusion. NO PCV under sustained boost conditions can be a problem. Even the old CIS turbo cars uses dual PCV.
Here, it's almost silly NOT to do the mod on a boosted truck, there is no complexity, or downside to it.
And it's a 1

job. I wish it were more complicated!
Scott Justusson