In the status tier benefits list, you've sold Silver somewhat short
Mentioned under Gold, but actually available to Silver:
- An extra piece of checked baggage when you travel in Domestic/Euro/World Traveller classes.
- Reservation Assurance on full fare economy tickets, ensuring a seat even where the flight is full.
Priority boarding is mentioned (correctly) in both the Silver and Gold lists, but since the lists are "in addition to those experienced by [lower tier]" it's perhaps more consistent not to repeat it under Gold.
In term of lounge access, Silvers travelling LH in First and Club also have Arrivals Lounge access (for Gold's, as stated, this is always available irrespective of class of travel)
Perhaps also worth putting in the list the access to Silver and Gold phone lines?