Sub list

Microsoft To Do is my most favorite app.

To stay organized, I everyday use this app and I love it. I have a feature request to the developers. Please Improve Sub list option. Under a list, we can create a sub list. But we can not make another sub list under this list. I think it would be better if it works like comments replay.

 if someone tap and hold one list and move it to another list. This moved list Will be the sub list.