When editing the support points on an object, the object turns grey. Combined with the scene lighting that is non-configurable, this can make it very difficult to visualize the form you are working with.
For instance, here is a form at one angle
and here slightly rotated
It would be great to allow users to change the color that things are displayed in. Not sure how that would conflict with your ‘keep the interface uncluttered’ mantra. e.g you seriously need a preferences/configuration dialog with as many knobs as possible!