Mstn has great 3d solids tools. But, these tools are very difficult to use in plan and section views where the face to be modified is only visible edge on.

Eg - place a linear solid (wall) in top (plan) view. Very common.

Then try to extend the length of the wall using the Modify Solids - by Face option. You can't select the face that you need to extend because it is face is not visible only the edge. The use needs to rotate the view or use another view which usually needs to be rotated as well.

It would be great to tweak the algo to pick up the edge on face -especially if the user click on the edge.