The white is going to receive some markings and "arm art", so, hopefully, it will look not quite so stark when finished. There is no standard size for basing, though we try to keep it relatively standard. if it is a unit of considerable girth, we use the 40mm for it. As stated previously, no matter the pose, it removes questions of which base (in the case of Viktors and Vulkans) do you use for measuring range, and whether or not a template or other fig is touching the base.
@ Bill: If you cannot get Viktors/Vulkans anywhere, I may have some, or may know where to get them. I have a friend who bought 6 Vulkans (I think) from me a while ago, thouogh he no longer plays. He may be willing to part with them.