Marginally? The only *G lounge in Europe (SEN at CDG used to be the other one, but it is now closed), where you can self-pour genuine French champagne is not 'marginally' in my book.
Don't call LO - you are not entitled to complimentary Advance Seat Selection. Period. LOT, however, uses a basic version of Altea Theoretical Seating, so the best seats are kept for best clients. I always OLCI 20- 23 hours prior to departure and mostly manage to score bulkhead seat (no emergency exit seats on E70 as the fuselage is fairly short).
True, and even the soft drinks aren't bad, the juices and good water.
Even if you're Gold and book Flex or Standard entitling you to ASR, you still have to pay for extra legroom seats. That's a new change. It's only for SEN/HON.