Looks good to me on paper; I haven't had a chance to test.

ppEnabledLayerNames is deprecated and ignored.
So this one doesn't make sense tho.

https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VkDeviceCreateInfo.html

The only reason for the change is to make it possible to define those layers in case someone is targeting a very early version of Vulkan runtime. Note that it's documented as deprecated and also not exposed in the constructor signature.

I see, maybe marking the EnabledLayerCount and EnabledLayerNames with Deprecated attribute would help that approach.

Not a bad idea - the field should be marked with an [Obsolete("Reason")] attribute (but not the [Obsolete("Reason", true)] variant, which would mark it as an error when used).