Crashman, I'm a little surprised at your tone, I would have expected better from you.
I have been using USB distros of Win8/8.1 in the shop for some time now and, as we know, Win10 is a USB or download distro. If these SBM machines were Win7 then I would heartily agree with you in the need for an ODD as that was, and still is, a DVD distro. However, they are not Win7, they are Win8.1. Just look at the SFF cases that are coming along now without 5.25" bays or even slimline bays (e.g. Node 304 3 years ago etc.), as well as so many laptops that lack an ODD. The industry already knows the DVD is a legacy device and it should go the way of the 3.5" floppy. I concede that an internal BD burner could be useful as a domestic backup device, but even there the cheapness of external HDDs makes that use narrow, especially as an external BD burner is a comparable cost with an internal one and blank discs form a significant ongoing cost.