I would like to ask about a way to control markers size. The bestway would be a square for every marker, where the edge size can be imposed.
If you are modelling a scalled ship model, you use tollerances of 0.001 or 0.002 m, while if you model a full size plan, you use 0.020 m, even more. This way, if your stations, waterlines… cross your squared markers, the fitting will be ok.
With a cross marker, this is more difficult.
Regarding the control points size, with large computers screen, a new bigger option over the three control point sizes available today, will be wellcome.