This should be a fairly easy one:
One problem I run into in the Livery and Vinyl editors is the coarse resolution of the positioning grid. When moving primitives and groups in the editor, the movement snaps to 0.5-unit grid increments. This is particularly problematic in the livery editor when trying to flow elements across surface boundaries, such as trying to make a continuous stripe that goes from the front view, over the top, and continues to the back view. Often the coordinates do not match across the boundary seams in an even multiple, so the stripe will have a noticeable discontinuity at the boundary that cannot be adjusted out easily. I am proposing a toggle mode for element movement in the editor similar to the toggle between uniform and non-uniform scaling in the sizing tool. With this toggle, you could choose the default coarse movement grid (0.5 units), or the fine movement grid (0.1 units). Things would naturally move more slowly in fine adjustment mode, but it would make tuning out discontinuities a much easier process.