Susan at Imperial is a top air agent.....not 100% sure they sit as well with LH/LX/AC as they use to, but certainly worth a conversation
I think they are doing quite a bit of business with LX and the ZRH/YUL route- which has F so there may be some interesting promotions available (by full C/fly F type- which means for ~4500 EUR you may be able to get an F r/t).