We did evaluate the option of using Vulkan. So have others. It's not even necessarily off the table, we just don't think it is the best design approach. If you

We did evaluate the option of using Vulkan. So have others. It's not even necessarily off the table, we just don't think it is the best design approach. If you are very interested in the details of API design choices, then I'd suggest joining the Community Group. Anyone can join!