Started doing this then stopped as I don't think it's giving an accurate picture of my personal opinion:
For example, It asks to rank the following:
Non-Mileage (waived fees, partner discounts, extra checked luggage, guaranteed revenue seat
Non-tangible (priority ground services, lounge access, priority seating, gift status)
Mileage (tier bonus, partner earn and redeem, purchase and transfer miles, upgrade vouchers)
Unpublished (operational upgrades, personal welcome, blocked seat, amenity from higher class, invitations to events)
However I think at least two of them are just as important as each other - but the survey doesn't give that option so isn't a true reflection of my opinion