Currently, the passmarks tool works great. However, there are some minor issues.
This is a real-world case that would be great to have fixed asap-ish :)
When you make a hem using the custom seam allowance tool, and designate the corner point as a passmark, the passmark ends up in the corner of the newly created hem. This is kind of useless.
In a production/factory scenario, ideally, you'd have a notch indicating where the hem starts horizontally, and where the seam ends vertically. This way the seamstresses don't have to think, which is good :)
Attached a .val file for example and an edited picture of how ideally this could be fixed on a corner passmark.
This not only applies to the hem, but also the top neck seam on a jacket.
Maybe a new type of passmark labeled "corner passmark" could be added to fix this? This variation would add a passmark horizontally on the seam, and vertically on the hem.