I fly from WW and am a huge fan - to be fair always looking to improve their service (at least over my 2yrs experience)
Some things that would escalate it for myself to a Carlsberg experience: member of ground crew coming out to meet you on arrival (from a day trip to France perhaps) with some refreshments and then to offer to put the cover on the plane for you. I am sure most will think I am a lazy sod but i would happily pay a bit extra for a more personal service
Finally, as you relax for a second with friends someone somewhere updates the flight record electronically so saving idiots like myself no end of grief going over this