add icon-only / iconized option for most columns
All the text in columns can be hard to sort through, and having a large enough column for things like multiple categories or multiple dependencies is unrealistic.
The solution is to have an icon-only version of most columns. Just like the notes column currently, we should be able to see simply that something is present. The icon provides that indication, hovering over it brings up the details, and it provides a quick way to double-click and go right to the place for editing that item.
I would love to have columns with just icons for the presence of prerequisites, dependencies, reminders set, recurrence set, and maybe even due date set.
These could be duplicates of existing columns just with icons instead of text and set to default to just the width of an icon.
A special concern could be the categories column.
At the most basic, it would be nice to just have a single icon indicating that the task does have category tags. Thus, this would be a place to hover and see the list of categories. But another idea would be to have icons shown that match the icons of each category tag! Thus, the number of icons would give a quick visual indication of the number of tags, and the type of icon could quickly identify each category! This makes more sense than having task icons themselves inherit category icons because there's no logic to how to handle multiple tags on a task in that case. This would allow meaningful icons without disrupting the basic status icons (unless the task appearance itself was changed by the user). This could be a preference setting of course.