OK, my last post didn't give enough explanation as to why I got into this destructive mood. So here it is.
As I went into my lys to get some tips on the knitting tension, I learned a lot about drape and the feel of a knitted garment. The shop owner let me feel some of the knitted items that were displayed and explained why some of them were knit a bit too tight and why the others were just right. And she showed me how to recognize that on a knitted garment.
The conclusion was: I was about to finish a sweater in a too tight tension. This meant that the stitches would not be able to move against each other. I knew I was going the wrong way and had to start over.
A week later and I'm about to finish the last sleeve. So, in a couple of days I'll be able to show off my tunic sweater, which fits perfectly, and I already can't wait to be able to wear it.
Meanwhile I'm also pondering which of the three I should knit first.