On M&M you make 225% (starting with FTL Exec, otherwise 200%) which seems to get you SEN (*G, more valuable with LH, I think also full free lounge access when flying within the US on domestic flights) - might be an idea, as with C only 50k would do to reach, and other 50k could get you any other programs *G too (I think there is still that thing with free upgrades within US domestic flights for "own" elites)