Comment 8 for bug 170537

Another reason why including autotrace is a good idea:

Autotrace produces much more pleasing outlines than potrace. Potrace tends to blunt all edges of a source. This is especially annoying when trying to trace schematics and other graphical content which includes sharp straight lines with angled interesections.

While my first tests with autotrace revealed some weaknesses in terms of artifacts and accuracy, edges were nicely reproduced and straight lines actually came out straigh most of the time.