Align Stroke to one side of open path
The feature which allows you to align stroke to inside or outside of a path for closed shapes is fantastic and gives a great deal of dynamic help. Currently, the only way to align a stroked path and another shape is inaccurately with only visual cues or expand the stroked path and lose editability.
I don't know if it has been suggested but a feature which allowed you to preserve a non destructive workflow and interact with shapes more easily is very much within reach. Simply create an equivalent for the align stroke to inside or outside of path for unclosed paths.
And it’s now in Beta 184.108.40.206 and you can try it and see if it works as expected. This really feels like a fixed bug, something we all should have had from the day inside/outside strokes got introduced.
Please, give it a go and comment back!
If you are also interested in having this option to work with gradient-on-stroke modes, consider upvoting this request: https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/31953622-non-functional-gradient-stroke-along-across-option