I am curious where the nostalgia comes from, what is it exactly that people are missing?
The only genre I can think of that went away is Adventure games on the PC, other then that how are the old school shooters better then what we have today? Are people not happy with the direction the strategy genre has taken? Simulators aren't leagues better now then they were 20 years, or even 10 years ago?
Truly innovative games almost always suck. Once in a great while we will see one that is a blast to play(the most recent that I can think of is the 'port' Portal), overwhelmingly they are flat out awful. In fact, I think a great part of the reason why games have started losing their crispness in the gameplay segment is because developers have to try and be 'innovative' with dumb ass ideas lest they get blasted for being a rehash.
You know what, give me what has been done a thousand times before, just give it to me
better then anyone else has ever done it. Give it to me more polished, refined and enjoyable. Alas, that is unlikely to happen in the PC market. Way too many elitist snobs that demand innovation while ignoring the dominant platform for innovation(the Wii- like I said earlier, truly innovative games almost always suck and the Wii has tons of examples to prove that point

).
Also, what is so 'consolized' about PC games lately? The menu? Are people just looking for a killer menu game? 50 hours plus of menu exploration! Legendary boss menu challenges!......? What is it that has been 'consolized'? Haven't played a PC game in quite a while that wanted me to use a controller for anything outside of driving, mouse and keyboard are still working quite nicely thank you.
My top list for single player PC games over the last few years, KoTOR, Bioshock, Portal- all ports. Hell, the by far biggest segment of PC gaming right now, MMOs, are almost entirely exclusive to the PC market. Perhaps people are looking for a scapegoat? The unique types of games we used to see on the PC aren't around anymore because people weren't buying them. Not saying that is anyone's fault per se, but game developers have kids to feed too, and they have bills to pay just like the rest of us. If a market isn't there, the product will go away. The last truly great PC exclusive game I really got into came out quite a few years ago and sold horribly, Anachronox. Beyond Good&Evil is another one, huge sales failure. Really some absolutely stellar games there, but quality gaming doesn't sell. Not enough innovation, pretty enough graphics, or right franchise name. Consumers made the market what it is today, the publishers simply gave the people what they demonstrated(with their wallet) they want.