© psi29aGodot is awesome by the way. As said elsewhere, had it been around when OpenMW started then it could have been used.
Sometime ago i've read that OpenMW probably will not support Vulkan, because replacing OpenGL with it will break compatibility with older hardware and supporting both API will increase maintaining cost (or something like this). And i've thought: why don't use upcoming Godot 4.0, which supports both Vulkan and OpenGL (GLES 2.0) for compatibility? And it doesn't require maintaining: it's what Godot team for. They'll probably be glad to have OpenMW on their side.
I understand it'll take some (many?) effort to move OpenMW from OSG (which probably be deprecate in VulkanSceneGraph favor) to GDNative, but won't it be worth it?