As an interesting point for comparison I recently flew LHR-PVG via HEL on finnair, as well as the service being consistently excellent in general I had a personal greeting from the pusor on each and every flight and on the log haul leg a geeeting and a further visit before landing (with connection information on the return leg). I think the thing that stood out was the consistency, with BA the greeting is a random event, with AY it appears to be a policy that is followed and treated seriously.