Wolfstein loved 386. Doom loved 486. Quake loved Pentium. Quake 2 loved Voodoo. Unreal 1 loved S3TC. Crysis loved shaders. With each upgrade you get more technological love from your computer.
Generally, I was thinking about atmosphere, climate, about developing games which work ok'ish on today systems, but will work really good on tomorrow hardware. This kind of situation encourages, I think, new way of developing game technology. Case in point – Crysis 2 build on Cryengine 3 – which is in many ways inferior to earlier Cryengine 1 (Crysis 1) and 2 (Crysis Wars). Care to imagine, how Crysis 2 would be look/work, if will be developed to sustain today PC standards, not a six year old console technology? I'm not taking about high-res textures and few of DX11 effects, but about an engine build from the ground around today and tomorrow tech. New technology loves upgrades...