I would like to see the task and subtask fields automatically expand as you type, up to twice its default height. Once the field reaches the maximum expanded size, it will stop growing and show an internal scrollbar so you can continue writing. And include an Expand View option, allowing you to open the task or subtask in a larger editing view when you need more space to review or update longer content.

This is exactly how the description box operates currently and it would be nice to have tasks and subtasks have this functionality as well.