Hello! I have just received lifetime UA *G status and now can consider flying other airlines... so I'm deciding on the best OW FFP. Your advice would be greatly appreciated!

(1) What is most important to you in a FFP?
(upgrades on travel, priority services when flying the airline, extra baggage allowance, good award redemption rates, better award access, free - discounted lounge access, etc.)
Reply: Lounge Access, Upgrades and Business Class check-in are my hightes priorities. The extra baggage allowance is a nice to have. I rarely do straight awards, and if I do, then in Business or higher.

(2) How many miles do you usually fly each year & in what class? How many flights/sectors?
(<25000, 25000-50000, >50000 miles - <25, 25-50, >50 flights?)
Reply: I currently fly 30-50K miles TATL per year (6-9 segments), plus 6-12 short-haul segments per year within Europe, some of which could be done on AB or BA.

(3) What types of fares do you usually buy?
(First, Business, Premium economy, Economy, cheapest)
Reply: Normally the cheapest. On UA I have ocassionaly bought the lowest upgradeable fare (W) in order to upgrade with an SWU.

(4) Can you choose your airlines and/or class of service? Do you travel for work and/or pleasure?
Reply: I travel for work and pleasure. I can usually choose the airline. Class of service is paid (cheapest) economy.

(5) Which routes and airlines do you fly most often?
(US Domestic, Transpacific, Kangaroo, in Asia etc)
Reply: TATL is usually STR-LAX, although I have also departed from FRA (often), ZRH, and even MXP and CDG to get an afforable upgradeable fare. Inner-european is usally STR-TXL or STR-TRN (not so good for OW).

(6) What is your home airport?
(SFO, SCL, London LHR, HKG, Singapore SIN etc.)
Reply: STR (Stuttgart)

(7) 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?
(AA Executive Platinum, QF Gold, UA 1K, LAN Comodoro, etc)
Reply: I am a lifetime UA 1P with over 1M miles banked. I have 50K miles right now in Executive Club (Blue). Only status is on UA.

(8) Preferred Airlines? Most common Airlines flown on?
Reply: I used to love BA, back when I had a Exec. Club Gold (that was a while ago...). Right now, I find all of the Star Alliance airlines spotty, including UA: can be good, can be bad. Same for LH and LX in Economy. When I fly STR-TXL, i prefer strongly Air Berlin to Germanwings, which I absolutely hate. Germanwings is Lufthansa's version of Ryanair...

By the way... it seems to me that the programs I should be considering are AA, BA, IB and AB -- but I may be wrong, that's why I am asking for your expertise!