Thanks Tim.
I appreciate that you can redirect some of the entries in the top-level user folder - including "My Documents", where you put the SkyDemon stuff (I assume redirecting My Documents redirects the symbollic link). Various problems have been reported apparently caused by relocated user folders with the W10 upgrade but this may be for people who have managed to redirect the top-level user folder.
Redirecting My Documents wouldn't solve my problem as I would want to redirect not the whole Documents folder, but merely the SkyDemon sub-folder.
However, I sense your determination that this is not something you're going to change, so I'll live with the extra 6 clicks! SkyDemon is perhaps unusual but not unique in not allowing users to choose their own default user file location. No big issue for me.