@hawcad i compare with SW because it is a very good piece of software, there should be no issue with that. comparing helps making them both good as each other, as developers read forums and pick up on ideas! remember its healthy competition.
As you mature in your career, you will find that not one software is "perfect", and no two are exactly the same.There are often ways to accomplish the same results. There were a lot of mouse clicks required to get the end results in that first video. I'm pretty sure you can follow the previous suggestions, and do it via draw in view, in no more required steps.
When you measure to the outside intersections, it surely isn't confusing to anyone where you are dimensioning to, and requiring dots or extension lines, is it?
And for the given example, a deimsnion to the sharp, virtual corner does not make any sense in practice.
For a sheet metal bend less than 90 degress You will use the tangent anyway, isn't it?
So this request more or less is a more theoretical for that given situation.
But I agree to @MagRiz an option for showing those extensions would be fine too.
they may not be needed for a laser cutter or a computer programmed machine as they would use most like use the DXF version of a part. But now imagine someone physically inspecting a part. (or even making a part by hand.) they would need to know where two lines meet before a radius/ fillet is applied to that corner.
remember i'm more interested in a solution to my request, but do feel free to continue a discussion on the subject or challenge me if you like. it just makes us all better engineers!
but for a sheet metal part this virtual corner will be got very hard.
OK, for a milled/turned part there this dimension could be interesting or to say it better, should be used.
Nevertheless SE will do this virtual dimensioningin parts by itself, so creating them in 3D and retrieveing in draft even makes it easier to get, but they can be creating in draft too, using the mentioned intersection capability.
And - Yes - an automated showing of extension lines and intersection points would be fine!
Inside intersection points are usually very difficult to show clearly, especially if the radius is small.
I would just add a subfix to the dim saying "TO INTERSECT."