Moon and I go back a long way, years back on the BDC board, and I have a huge respect for his research and his postings. However, we've also had a basic difference of opinion regarding WAR. He likes it. I don't.
I don't because there are too many moving parts. Have you even looked up how WAR is calculated? Especially dWAR? It reminds me of something Eck once said about tall pitchers with a big motion - and I'm paraphrasing here - 'These big guys with big motions, there's just too much that can go wrong here, and when one little thing is wrong it messes up the whole delivery'. That's my bigger issue with WAR - there are too many moving parts and too much subjectivity, most especially on the defensive side of it.
I have no issue with oWAR - straight forward numbers calculation, but one simply cannon merge data obtained one way with data obtained another way (hard numbers vs. subjective numbers) and come to any meaningful conclusion.
Now, to respond to the last two paragraphs of Moon's post - the synopsis if you will:
Lumping the criteria listed, (OPS, ERA-, WHIP, OPS against, UZR/150, BA, OBP, Fldg%, CS%) does nothing but muddy the waters. BA, OPS, & OBP are offensive numbers that can be precisely calculated using data at hand. ERA- & OPS against are pitching metrics that shouldn't even be brought into this conversation. It's patently unfair to compare pitchers against position players because pitchers don't even hit in the AL while they do hit in the NL (Do they use a pitcher's offense in the NL in calculating WAR? Does anyone even know, without looking it up?). There are too many differences between a pitcher's contribution and a position player's contribution for WAR to have any meaning when comparing the two. So let's not try to compare them and weed them out of this conversation.
That leaves us with the offensive side of the game (OBP, OPS & BA) vs. the defensive side of UZR/150 and Fldg % (I'm a bit shaky about Fldg % due to the subjectivity of what's an error and what isn't, but I'll defer to Moons post on that one). So again, I fail to see how one can combine had numbers with subjective opinions and draw any meaningful conclusions.
To answer the question of how I propose to rank a player's total value, I don't. And that's why I don't think we should try. I have always been very frustrated at how we subconsciously (?) overvalue offense/undervalue defense. [When we talk about players one of the first things said is, "He has an OPS of .xxx" With only a very few notable exceptions offense is ALWAYS the first thing we think about, even though offense may be the weakest part of one's game. Why? Because it's easy to quantify and reliable. We stay away from defense because deep inside we all know it's subjective and unreliable - and yet it's one of the main components of WAR. Does that make any sense?
IMHO it's very possible that we've become overly obsessed with numbers and quantifying everything and everyone in baseball to the point that we're overlooking the fact that not everything can be quantified. Sometimes the eye test can be as reliable as the stats. But, that's just MO.