I have read through your article on oil and am overjoyed to find that someone in the RC industry Gets It!!
Oil content in the fuel should be determined by oil quality rather than a blanket percentage.
Like you allude to in your artcile, the european fuel companies use esterified oils in their fuels. These oils provide tremendous film strenght when compared to PAG oils which are mostly used in synthetic gearbox or circulating oils where high speed moving parts are less likely.
A fact that many miss, is that in a model engine the lubrication is mostly hydrodynamic in nature and therefore low viscoisty oils are preferable (Especially in ringed engines) but with a high retention of viscosity across temperature change (called Viscosity Index to us folk in the Lubricant industry)
I know of at least one Euro Methanol fuel company that produces a 10% fuel with high quality esterified lube in it but few are willing to buy it out of fear of engine failure because it has been drummed into them that more oil is better.
Thanks for fighting the good fight on this one. Look forward to your reviews of model engine fuels and I hope you are able to pick the molecules apart to establish whats in there.