I know Microsoft has a contractual obligation to support 7 for a while but I think there's next to zero chance they will reset Windows 10 and go back to Windows 7. You will need to get away from Windows 7 at some point. Better start making preparations now.
Radv, community-developed Vulkan driver supporting last 3 generations of Radeons, supports vkQuake, Dota 2, and The Talos Principle, which is pretty much everything there is on Linux [2]. Playing Doom 2016 over Wine using Vulkan is also working if one uses airlied's branch [3]. Performance is not on par with Windows right now, but I expect it to improve over time.
[1] https://www.mesa3d.org/relnotes/17.0.0.html [2] https://en.wikipedia.org/wiki/List_of_games_with_Vulkan_supp... [3] https://github.com/airlied/mesa/tree/radv-wip-doom-wine
Win7 is superb, looks nice and works rock solid and is supported until 2020 or beyond (see XP). And then in 2020s Fuchsia/Android, or what ever OS is available and make sense for end consumer needs. (Of course *nix driver support is important too, AMD knows that)