I have found LC a pretty useful CAD package for linux.
One feature that I would find particularly useful would be horizontal and vertical rulers (along the page) that are dimensioned per the scale chosen. I only use CAD occasionally, but it seems to me that this feature was in a version of AutoSketch that I used many years ago. It certainly helped in drawing. Ideally, the feature could be turned on or off depending on the users need for it.
I agree. Without rulers, the origin is difficult to find and the drawing "floats" in space without scale. If you want to place a one inch square box two inches up and to the right of your drawing, rulers make it much easier. They also provide a reference for the grid.
I also agree! Having a ruler is a must for me. Currently I use TurboCAD 2D. I can create a layer for measurements. I can port those drawings to LibreCAD and they look great! However, if I change the measurement of anything, I can't re-measure properly! I'm in the process of moving to Linux and this is a stumbling block for me.