I'm guessing these kinds of things are being built somewhere. First commerically but eventually in open source.

I've always been interested in the game mechanics side of things. Like having a 'recognition' skill and that floating name over people's heads might be wrong if you don't recognize them... or if they run off screen and come back you don't even realize it is the same person, and a disguise skill.  Or an amulet that records and reports murders and auto-updates your guilds standing against other guilds. Shit like that. I'm barely getting started. I have 129 git repos of private game development stuff.