Clamp refraction amount in viewport 2.0

[pechart]

Hi! This request will be a bit strange, but do you think you could clamp the maximum transparency of objects in the VP2.0? As nice as it is to have the transparancy/refraction actually show up in the viewport, it's a bit annoying not to see my objects at all, when the refraction color and amount is very high (and the reflection and fog color isn't considered, either).
And as this is not only in textured, but also in shaded mode, I have to switch to the wireframe on shaded displaymode to see my objects. And that's not cool for playblasting, modeling, etc of highres meshes.
Thanks!