There are two assignment patterns: People Column and Team Column.
By default, the Team Column can be a smaller column width vs the People Column width, by about 20%.
The People Column’s extra width is understandable since multiple assignments need more space for avatars and the “+” iconography.
When the People Column setting is set to only 1 person, however, it’d be great if it allowed a smaller default width like the Team Column.
The reason is that some of our boards have maybe 4-6 assignment columns, and the tighter the space, the more columns we can have appear at once without scrolling. Admittedly, it’s quite a small UI detail, but I thought I’d throw it out there.