Sooo, regarding the LSO volume... I tried using RFN's own Charles de Gaulle, which forces the French sound files to be used and they come through loud and clear! This made me try playing the same LSO calls direct from the WAVs (i.e. outside the sim) in French vs. American and sure enough the American ones are more subdued. I figure when these were recorded they quality of the mic used wasn't so hot. I'm considering recording my own, but they'll be in English rather than American!
The visibility of the landing lights issue may just come down to one carrier, HMS Victorious '60. When using other carriers all seems well so far.