Something different I'd like to have is direct-x 10 / 11 support.
Yes, there might be more important features but DX9 is more than just outdated (11 years old).

Also, DX10/11 has some great features and is faster:
My brother's application needed 900mb ram and rendered at 180fps. After just switching to DX11 it needs 300mb ram and renders at 800fps.