Assigning tasks to tasks within projects

Hello there! I am new to Asana, and I am still discovering some of it’s features. I find the feature of assigning a task to a project very useful. After I assign the task to a project, there is a drop-down allowing you to assign it to a specific section (or column). It would be great if this feature can go even further, and there is also the ability to assign it to a task/subtask, etc. within the section/column, maybe as a series of drop-downs going all the way within the hierarchy. This will avoid then having to go to the project and convert tasks into subtasks, which can be a laborious process, especially in board view (or if dealing with multiple projects).