I'm one of those ex BMI'ers who are now busy collecting BA tier points. If only they would consider BMI Gold years I'm sure I wouldn't be far off already.
Only 2,200 lifetime tier points so far. Long way to go for me. Another 1,500 expected before the end of 2013, so that will take me up to 3,700. And just over a tenth of the way there.
Good idea by BA. I will have to rethink my mileage run strategy now...