First of all, thanks for this great product. I'm only using it for one day now, but I'm getting the hang of it already. It's all very straightforward and intuitive.
About my feature request: Akin to graphic/dtp programs, I'm missing snap rules. I find myself drawing very long lines which serve as snap guides for the entire drawing. I have the snap rules in a separate layer for organization (they are not part of the drawing). It would be neat if QCad could give me a snap rule. Makes it much more convenient to line up objects while drawing.