I’d be willing to do that test if you’re ok with sending me a test build. I’m running Pop_OS! 19.10, soon to be 20.04, and have a Radeon VII card. I’ve done a lot of experiments in DXVK with other games as I only game on Linux now.

 Linux gamers will need a DX12/Vulkan capable GPU which should be at least an AMD GCN graphics processor with open-source AMDGPU driver

 ... if yes, then you have no idea how these things works. Initially it would be like extra 30-80% of work, until it would become completely impossible to keep the versions compatible, then you would be left almost alone in the multiplayer.
 Feel free to keep playing the older version of the old game!