Learning
#Inkscape in order to substitute
#LibreOffice Draw. I moved into LibreOffice Draw some years ago from
#Xfig, only because it had turned into legacy. However, I've learned over the time that the structural complexity of actual diagram tools tend to take my focus away from the actual problem, and more into fiddling between the choices in the tool itself.
I created my own12 cm x 9 cm template, which are pretty good starting point metrics (and aspect ratio) for many situations, especially when you have to embed pictures. These metrics are also in good harmony with the primitive (but functional) connector tool of Inkscape, and on keeping complexity of the diagram low :-)