Please let me know if I can do better than United MileagePlus.

1. What is most important to you in a frequent flyer program (FFP)?
upgrades, priority services, baggage allowance, good award redemption rates, better award access, lounge access, etc.
>>> Reply: earning and redemption rates as I usually buy discounted economy tickets and I don't care much about upgrades or lounge access

2. How many miles do you usually fly each year? How many flights/sectors?
less than 25000 miles, 50000+ miles and 20-25 flights, etc.
>>> Reply: around 50000 miles, 10-12 flights (15-20 segments), US, Asia, Europe

3. What fare class do you usually buy?
first, business, premium economy, economy
>>> Reply: discounted economy

4. Are you able to choose your airlines and/or class of service? Do you travel for work and/or pleasure?
>>> Reply: mostly for pleasure and can choose flights even for work related travel.

5. Which routes do you fly most often?
transatlantic, domestic USA, intra-Asia, etc.
>>> Reply: US-Asia, US-Europe

6. What is your home airport?
>>> Reply: SFO (would prefer SJC though if it had more flights...)

7. Do you have status in any FFP? What is it? How miles do you have banked in each FFP, if any?
>>> Reply: ~100000 skymiles

8. What are your preferred airlines, if any?
>>> Reply: really no preference (I have Chase Sapphire Preferred CC though...)

I used to be Delta Gold when I lived on the east coast and flew out of JFK... and Delta didn't yet have revenue based accrual. After moving to the SF area I focused on MileagePlus given that United dominates at SFO, but it doesn't really work out: I didn't get ANY miles for my Lufthansa flight from SFO to Munich, only got 845 miles for ANA San Jose-Tokyo... and MQD's are also just a fraction of the actual price (e.g. $95 for ANA Tokyo-Bangkok, none for Swiss SFO-ZRH), so for example this year having flown ~50k miles on *A, I've earned 24,632 award miles, 44,799 PQM and only $1,553 (so not even silver)...