I would love to hear them do this. I think it'd be sad if they didn't do it - people can say it'd be stupid, but at the end of the day it would be a chance for everyone on the staff to think of they're ten favourite games from the last six years.
For all the talk of how negative and snark-ey everything is (which I don't necessarily agree with), this would be a chance for the crew to talk about the games they love and why they love them, as well as the wider context ofn why they were influential in the generation and the games it inspired.
I think they should do it, I'd really enjoy such an eclectic, broad discussion.
I don't know what you can do to make it stick, but you've listed "knowledge", "confidence" and "self-esteem" as 'things' that people want more of to feel happy, and you're using those as an example of materialism.
Which would most certainly not be materialism. At all.