They honestly need to make a native Linux port as they did with Warband. We have Vulkan and stuff now. After the full release there won't be any excuse for the devs not to do it.
For once I actually don't agree with someone asking for a native release. Valve has made it clear they are on board with some form of Linux support in the form of Proton and SteamOS(if it ever gets updated). Proton is intended to lower the barrier to entry for modest Linux support, as it leans heavily on the community. What I think really needs to happen is Valve, or more accurately the community, finds fixes and upstreams them into WINE. Then, Valve can publish a compatibility map for devs to build Windows versions of games that play nicely with Proton.
The corollary to all of that, though, is properly recording metrics for devs/publishers to help them make good business decisions that hopefully support Linux native releases. It also means we as a community need to spend money; money is the only reason a publisher will release a native version.