I think the biggest improvement and widespread impact that's going to come out of DX12 and the newer GPUs, is that it's going to be efficient enough, that along with tiled resources, it's finally going to push us over the hump where voxel cone tracing will be now possible on newer GPUs. No clue if it will be enough to pull it off in a reasonable fashion on the X1, but VXGI or other implementations of voxel cone tracing should become a practical reality on newer GPUs, and not just a fancy tech demo.
Sure, putting a current game on DX12 will get you some fps improvement, better AA, higher resolution, or allow you to check a couple of extra boxes on the PC side, but I couldn't care less about any of those things, as I am not and have never been caught up in the resolution or frame rate craziness that's taken over a lot of gamers.
All that is a nice perk, but compared to the ability to actually have the closest thing to path tracing we have ever had, that will completely revamp lighting in gaming as we know it, I really don't understand how people aren't more excited about it.
Most people seem to be excited about Ps nowadays, and rarely actually talk about anything else as if that's all graphics are. It's the craziest thing. It's like everyone's been brainwashed and I'm living in the twilight world. I remember there was a time about 15 years ago when you could actually have real graphics talk on GAF, and people understood geometry pushing power, texturing, shading abilities, etc, and I think the most disappointing part is that today the only thing gamers seem to understand is resolution. It's like neverending arguing about the gloss on your clear coat of your car, while completely ignoring the make up of the car.
So yeah, I'm excited about that, I think it's going to be huge, and I feel very alone in that excitement.