Have you considered abandoning LH, but not M&M (at least for the time being) ?

I need to requalify for LH SEN this year by December. I haven't flown with them for nearly 2 years now, having switched basically everything over to EK.

I do want to qualify this year, as I would like to continue keeping LH SEN (*G) for another two years. After that, I don't know what I will do.

To renew status, I have already booked a R/T on SQ (D class) and TG (J Class) for about $4100 and $3700, respectively. This is between LAX-CCU.

As long as there are cheap business fares on *A carriers that qualify for 200% mileage credit on LH, I will continue to use them. Note that I am looking for non Z fares, as I am clearly anticipating 150% mileage accrual on Z fares for non LH group carriers as well.