Raven Gold
Local Boy Hunter
And what about the folks that play older, undemanding games that are quintessentially hardcore? Specifically DotA (which may or may not fade away with HoN and LoL on the scene) and CS1.6? These games remain popular because they can run on your work-issued laptop (among other reasons), but they certainly don't attract the demographic that play Peggle and Barbie Adventures.
Well I feel graphics is just something to attract the weak minded who don't care about content. Really the essence of a game is how it plays and keeps you playing. Everybody who keeps "Pushing the envilope" are just running into a steel re-enforced concrete wall. Graphics realism has reached no signifigant step forward for 3 years now. CoD4 looks just as good as anything afterwards in terms of realism.
Where there is truly alot to be developed is in gameplay and making games feel more emersive, and the pinicle of that as far as I can tell is CoD 4 and 5, everything since has had nothing new to bring.