This article on Flight Global is very interesting. After all those incidents they are still taking off on less than full thrust? This is very strange. If you know that several crews had problems rotating from an airport, why not just give it full beans and hold the brakes longer? Why wait for the company procedure update to do the obvious thing which is also much safer? And if the company had those problems in 2007 why is the procedure only amended now, twelve years later? AF and LH are not some third-world ULCC, sure they must react sooner.