Would love to see this, particularly for splitting or dividing tasks between assignees. Right now it would require creating another task column (creating clutter), and often times there are cases where the split task may be a one-off. For example, if two animators are animating a character respectively within the same scene- they should have their own status and schedule management instead of being inside of a singular task.

What's the difference between this and adding checkboxes? Not sure if we need sections with to make subtasks visible. Hard to image for me