Does DXVK 2.x require memoryModel, or can we expect DXVK to work on Kepler when using NVK?
dxvk requires everything that is core Vulkan 1.3, so yes, it is required. Unless there is a way to support it or it will be emulated in the future, you're out of luck.
While we are waiting for such potential miracles, your best bet on Kepler currently is: https://github.com/pythonlover02/DXVK-Sarek
Nothing extracted yet.
NVK supports all of Vulkan 1.3 on Kepler *except* memoryModel: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35846#note_3009829
Does DXVK 2.x require memoryModel, or can we expect DXVK to work on Kepler when using NVK?
(Note that unlike the proprietary driver, NVK does support maintenance5 on Kepler.)