The 31 might not be "that" big, but it is huge compared to what it is meant to replace (i.e., a fast 50 / the 43) and also, rather expensive for what it is meant to replace.
A lot of that cost is due to its extremely high quality AND full frame coverage! I would like to see the DA alternative, smaller, a little slower, ASPC only, perhaps faster focusing (and a hood meant for ASPC), and, of course, a price that is more in line with what a normal should be (approx. 400). I would not be bothered much if things like bokeh were not as good on this mythical DA 28 ltd.
In the meantime, there are a lot of good manual focus alternatives (and one or two AF alternatives), but nothing that fits in like with the DA ltd. ethos.
PS This vivitar close focus 28/2.8 is a real blast. A little slow (apparently there is a f2 version that is faster, but not much better optically). I'll stick with the 2.8 for now since it is A) cheap, and B) small
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