I think running out of bobbin thread is my top peeve. I also hate machine needles that thread front to back rather than side to side. Guess I am showing my age as all my early experience was side to side threading. Also side to side lets you use a regular old wire needle threader for those of us with vision issues. I think I finally solved the losing my scissors at the machine issue. I put one of those command no nail hangers on the machine and have trained myself to hang the scissors up rather than put them down.