Im not aware of any specific LH procedure that would not allow overbooking. I guess its reasonable to assume that there are also (albeit less) no-shows for F class bookings. In any event.. I think you are in a great position... getting bumped on LH F from GRU-FRA is surely going to be lucrative (if you are flexible enough to change your travel plans that is). The only other SEN feature I can now think of is the overdraft, but Im sure you will not be needing to use that for some time.
BTW, Welcome to Flyertalk.
[This message has been edited by Gaucho100K (edited 03-10-2003).]