FTL status of M&M (of Lufthansa, Austrian, Swiss) is quite useless. It’s *S and that level only gives you a few benefits if you fly the M&M member airlines (business class lounge operated by Lufthansa, +10kg + Business check in). If you fly other *A members, you get pretty much no benefits.

For 35k you get almost *G with other *Members, don’t bother to each M&M FTL status..