I have seen the error of my ways, and I am now going to accumulate miles in M&M rather than Krisflyer, as a complement my SQ PPS.

As my next 4 flights will all be with SQ, will there be any problem starting off my account with these. And is there a minimum number of LH flights one much do a year to retain M&M membership - like the Oneworld 4 flights rule?

I hope not as the scheme seems very rewarding indeed for regular C class flyers. With BA's latest (negative) changes this could be a very good move...