Hi,
I have done a lot of reading on this thread and it has been very helpful, however I was hoping to clarify for my own specific circumstances. I understand the preference around home airline and/or most regular airline - however this is where my challenge comes in.

I am from Adelaide in Australia, current living in London. I will be travelling monthly from London to Chennai via Doha on Qatar Airways (business class) for work over the next 6 months. In approx 12 months I expect to move to Asia (Singapore or Hong Kong) or New York.

Without permanent status in London, my key consideration is which membership will provide me with the most points to upgrade a flight home to Australia from either London or one of my 3 potential future locations. Based on this forum, it would appear that my home airline Qantas is not the best membership option and I don’t expect to be living in Australia within the next 5 years. Qatar will be my most common airline in next 6 months but not beyond that, and also is not very handy for flights to/from New York or Asia (unless going via Doha). The other option is BA, being my current home airline which I understand is a good earning airline. However, their base economy rates seem very high and I have found it very difficult to book Avios reward flights in the past - so may not be useful for upgrades.

Would appreciate any thoughts on best earners, together with offering strong flexibility in future.

To address the specific questions of this thread:
1) What is most important to you in a FFP?
Priority would be to upgrade some flights to business class for my wife and I for a Long Haul trip home to Australia from London/Singapore New York etc.
Secondary priority to reach necessary oneworld status for lounge access.

(2) How many miles do you usually fly each year & in what class? How many flights/sectors?
Monthly trips from London to Chennai via Doha on Qatar Airways (business class) for next 6 months.
Annual trip back to Australia for leisure, various other leisure trips around Europe (10+) on multiple airlines

(3) What types of fares do you usually buy?
Economy for Leisure
Business for work

(4) Can you choose your airlines and/or class of service? Do you travel for work and/or pleasure?
Qatar Airways business to Chennai
Emirates/Qantas to/from Australia for Leisure
Various flights and airlines within Europe

(5) What is your home airport?
Currently: London
Future: Potentially New York/Singapore/Hong Kong

(6) Do you have FFP status of any kind in OW or other airline? What is it? Do you have any miles banked in a FFP?
I have a membership with BA and Qatas, with low points in both.
Approx 40000 Avios with BA
Approx 25000 Qantas ff