I'm doing a render now to demo this for you. The Reflect node has a Softness parameter - what this does is randomize the surface normal, so the reflections jiggle around pointing in the "wrong" location. The Quality parameter increases the number of extra rays used to calculate the soft reflection. It's not very good, and it's very slow, but it works.

One approach would be to use a high-res in-focus image for your environment sphere so it shows up nicely in the background, but make the environment sphere invisible to raytracing. Then put a reflect node on the figure as usual, but connect the Reflect.Background to a Sphere_Map node and set it to white. Then connect the Sphere_Map node to an Image_Map node, but choose a blurred version of your scene photo. This way, any nearby objects will be reflected by the figure, and when not, it will use the blurred image.

But meanwhile, I'm rendering with Quality = 1 and Softness = 1 - excruciatingly slow compared to my usual renders, but the results may be worth it to you.

Chrome or mercury, as in the chrome wheel, actually does reflect almost perfectly like a mirror. The distortions of the scene appear because of the curves.

Real silver often does not, unless the surface has been highly polished. In any case, not only does it blur a bit, but it also does not reflect 100%. Instead some Diffuse is present. To get this, just change the colors in your EdgeBlend - put a medium-high gray in the Value_1, and almost white in the Value_2. Don't go too far though, or it will start to look like white paint with a clear-coat gloss finish.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)