Unfortunately not. I like the EM-5 a lot and tried one for a short time but after all prefer the kits I have now. However, looking at how many folks go for the semi-manual experience (Leica, film, legacy glass on mirrorless bodies, ...) and all the companies that still produce and sell manual glass there's at least some market potential for such a hybrid, no-nonsense beast and the hope dies last. I personally don't miss film that much but rather the direct, transparent shooting experience.
I agree, I've been shooting legacy glass on my NEX (and now Fuji) for years. If act I just got my first native lens in 4-5 years and while it is certainly a nice lens that really does try to capture some of the feeling of legacy glass (it even has an aperture ring) it's not the same. I do think however that unless you are using something like M glass legacy lenses can be problematic in that you will often run up against their limitations optically of adapting 40 year old lenses.
That said the experience of using legacy glass is typically much more satisfying than most native lenses. As to a simple body designed to use these lenses and modern glass designed to be manual focus only...where do I sign up?