Ive done this route a few times in economy i MUCH prefer the QR timings and experience.

1 -arriving in to BLR at 2 am means i can get to a hotel and sleep a few hours rather than the BA timing which is hard to sleep on board, but leaves me with the whole day to get through.
2 - I like the break in DOH to stretch my legs
3 - can maybe use a different QR flight to get an A380 from LHR-DOH where upper deck Y seat with side bins is almost Y+