Are you saying that VW spec 502.00 is low viscosity? Exactly what do you mean by, "use better oil than VW is recommending"? I honestly don't understand your comment, especially the part where you say, "Oil is oil".Oil is oil and we all know why VW changed their oil specs.
It is because the thinner oil VW has switched to recommending, allows them to claim high gasoline mileage.
And that has cause premature failure of any place the oil is not under pressure, like chain slippers, camshaft lobes, etc.
The best way is to use better oil than VW is recommending, which is thicker viscosity, not 502.00 spec.
They are NOT recommending the best oil at all, but the oil with the highest mileage rating capability.
Nothing in the hardware has changed, so there is no good new reason for the new oil spec.
My 2008 VW Rabbit 2.5 has always been fed VW spec 502.00 in various brands of full synthetic, including Castrol, Amsoil and Mobil1 - all in 5W/40 viscosity. With over 160K miles on the engine, it burns no oil between my 5K mile change intervals. I always use the VW recommended Mann oil filter as well. My outside temperature ranges from -20 degrees F in the winter to 100 degrees F in the summer.