>I think it would be easier for me to do it if it was part of the whole sorting process that's done to all input curves that determines the order in the first place.

If I understand right, you offer to tie this points to loft direction?
No problem, as it will be easy for you, just wanted to make option that will switch on/of start and end point. And it will keep last selected points every time you start loft.

Really I don't know what will be good just draw points by hand or this automatic option, it has to be tested) Because for example if you worked on one loft object and then switch to another you always have to change what points to create. But with simple 'loft to point" one click will be enough. But for people that are not advanced users that automatic mode will be attractive. So if it a lot of work for you "loft to point" will be enough) Or if not you can make both)