I think the point is that my mockup was a bad idea, and eobet's is also somewhat questionable.
To be honest, I'm not overly pleased with my result... Clumsy sounds like a good descriptor.
Eobet's is, I would say, a lot closer to the kind of thing this idea would have to resemble, but I'm not sure this really is a direction worth going. I don't think you could get it down small enough while still looking both good, and recognisably similar to the old MS-DOS logo.
Could try keeping the colour scheme of the DOS letters if you want to go for a variation on the cross design as used in the current icon that tries to have a general look/feel more similar to the old MS-DOS logo, but keeping them intertwined and at full size isn't going to work.
Though I must say, I am growing on this one. If a more MS-DOS logo-esque one was wanted, this is probably the way to do it.
Having said that, I'm not a big fan of the dithering in the purple, if I'm totally honest; the one red_avatar put up at a larger size is undithered, and looks nicer for it, if you ask me. 😀
The one you use as your avatar is nice, since it's stacked like the old MS-DOS logo, but I don't think BOX intertwines as well as DOS does, so this is probably the best way for that approach.