< If you only need to do this occasionally, then that is not a big problem
yes
but if a script can do the same maybe that's better :)
Draw a line between an ordered succession of points

< you will be able to have a script that will create point objects at the start or end of a curve
yes : what append when 2 curves have a common start/ end vertex between them?
points created are part of each curves or "double points" become one point?