Re: Nut Height - Ibanez Rules article; still an issue ?
Bit of a datapoint.
I've got 3 RG Prestiges: A ~2008, knocked about, RG1570 - fairly cheap from a dealer; a ~2011 less cheap, ebay, used but tidy RG3250MZ; a new RG652KFX-KB.
On both the 3250 & 652, I would say the nut is way too high. In both cases, a tuner on the 1-5 frets says the intonation is all over the place [I've tried various intonation set-up schemes]. Tuning, esp on E6, needs to be something of a compromise.
[On the RG3250MZ, whoever had adjusted the bridge height, seemed to not understand the lock screws - which suggests a lack of clue.]
By contrast, the 1570 [which seems to have had a fairly hard, gigged life], has the nut height set in line with the article; and good intonation along the neck. I suspect it's been set up by someone that knows their stuff.
So, as you'd expect, this supports the view that an overly high, nut messes up tuning/intonation.
I reckon I'll shortly be looking at shimming the RG3250MZ nut; and probably have the local set-up guru look at the RG652 nut. [I don't mind gently twiddling things, but taking files to a new guitar is outside my comfort zone...] Though I might just take the RG3250MZ to the guru. He's friendly, and it's an interesting guitar.