>> It won't always be the rightmost, it will be where you happened to place the first point of the curve. You must tend to draw them with your first point placed towards the right.

I meant, for primitives like circle, ellipse, etc with "center" option where you can't actually place any points of the curve you're creating. In that case, MoI always places first/last points at rightmost for top, front, right views (opposite for bottom, back, left views)