8jörn (Sorry, the auto-censor won't let me type your name, so I have to use an 8 instead of a B), a few things:
The officially VW approved-oil list is well-known and has been linked many times on on these forums and on other forums (Noria, Vortex, Audiworld etc) That list contains also the occasional error, which each times causes great confusion.
The lack of debate regarding LL oils is due to VW/Audi import models not being equipped for it (Maybe some are by now? I do not keep up, so I may be wrong here!). I have yet to see a VW or Audi with a flexible WIV in the US. This has partly to do with the detuned emissions control system which is implemented in US import versions and partly with issues I can't mention here without causing a riot by enraging some of the natives.
I do keep track of what the Euros do -- I am a Euro myself. LL oils are not necessarily ideal for a long and healthy engine life, as evidenced by the number of sludge cases and prematurely worn engines (I am talking here about VW gas, but especially diesel engines in Europe of the past few years or so). See the motortalk.de forums for specifics in that regard. The low HTHS oils (for example VW 503.00) are being replaced by newer oil specs that are backward compatible (while likely not being ideal, depending on the particular engine). The new specs being VW 504/507 -- a so far combined spec for gas and diesel engines.
The topic has simply been chewed over so many times that nobody really cares anymore. That may explain the lack of replies to your well-intended post. The other issue is that many of the local natives see engine-specific oil requirements as stupid, as money-driven, as a sign of bad engine design etc. It's just not a very popular topic, and, as history shows, it's bound to upset some people.
Personally, here's my take on it: If I were to buy a new VW (I'm thinking scIROCco), I'd use the oil the carmaker recommends in the country of origin. Due to low gas quality, I would however reduce my oil change interval somewhat from what the manufacturer suggests. As of right now, I am feeding my '96 Audi that which is suggested (VW 502), or an oil which matches the most prominent VW502 performance requirements. The most pertinent data can be accessed via the oil spec sheets.
I hope this sheds some light on the issues.