Older Windows games are starting to see some more love in the form of D9VK, a Direct3D 9 to Vulkan translation layer for Wine. More specifically it is meant to replace Wine's standard implementation that currently translates into OpenGL.
Most new Windows titles use at least DirectX 10 and are thus compatible with DXVK, but there are a lot of older games without DX10/11 support that will see a big benefit from this project. League of Legends is a prime example of a game that could really do with a performance boost under Linux with Wine.
Lutris already has several game installers that will use D9VK and early reports suggest a nice upgrade in performance.
Check out the official release announcement on Github.