Ian, don’t forget the minimum ‘home airline sectors’ required.
For BA, to move through the tiers, you must have a minimum of 4 BA flights.
RJ, require a minimum of 12 sectors on RJ flight numbers.
I for one look forward to BA and QR joining, I currently have Gold status with both so just using one card will be easy.
I shall stick with BA as find the Amex 2-4-1 vouchers the best deal around.