I'd love to see Valve bankroll some hefty Wine development and/or buy out Cedega/WineX/Transgaming, in my opinion that's the holy grail for what needs to be done.
Getting 99% of the games on Steam working out of the box with DirectX compatibility layer with in-house testing can and should be done, and is a better step than providing a VM layer right now.
I'd also like to see them contribute to OpenGL and get it up to DirectX standards in terms of API ease of use and maturity. It simply isn't as good, and until it is developers will continue to target DirectX.
Getting 99% of the games on Steam working out of the box with DirectX compatibility layer with in-house testing can and should be done, and is a better step than providing a VM layer right now.
I'd also like to see them contribute to OpenGL and get it up to DirectX standards in terms of API ease of use and maturity. It simply isn't as good, and until it is developers will continue to target DirectX.