I think it can have more confetti. Creating a task can be a reason for joy, and so can deleting a task, or even the pleasure of switching from light mode to dark mode. Of course, since the levels of joy from these tasks are different, different types of confetti should be used... :p
Completing an item gets you a confetti explosion, a satisfying ding, and shakes the item.
Section headers (starting with "#") are even more exciting to cross off