The major issue I believe with the PC is the minimum hardware requirements needed to run a modern game. Take Crysis for instance, it looks very pretty but still a generic fps in my opinion. If you look at CoD4, the game was much more scalable for older computers but it was the twist on the fps genre that sold the game well - penetration ammo, jumping over walls, storyline, and essentially the online play.
A few years ago, Company of heroes pushed the boundary for rts with its inclusion of ragdoll physics and new ideas such as troop cover behind walls. The game is still voted the best rts by many gamers and will probably remain top rts for a few years to come.
What I feel the gaming community needs to do is slow down the eye-candy technology for future games and concentrate on developing new games with fresher ideas, fewer bugs and with better individuality to the pc than just another console port.
Finally, I fear that if mmo games such as WoW and Eve were ported to consoles, then we might see the death of PC gaming.
So come on you developers, bring back DX10 flight sims, re-write Syndicate and Populous for the new generation and bring out that WoW beater mmo we have all been waiting for... Star Wars Eve Online: World of Wookies (tm).