We're sure to see this implemented somehow in the workplace eventually; upgrading my avatar to obtain work bonuses by doing my job better and faster, would definitely be more engaging and rewarding to me.
You laugh now, but I'm looking at you, Mr. Keeps-playing-TF2-to-get-enough-kills-to-unlock-that-cool-weapon

The inspiration as to why I'm here: Adam Foster; Minerva. Great job man.