Hi @Gleb, 

Not sure I understand what you want to achieve 

Have you tried Miro Kanban framework? And we also have a template for a to-do list. Does it work for you?

Please, let me know if I am missing something.

Have not tried. Does not work for me.

Kanban is about task assingnment. It focuses on current status of tasks.

First of all i want to create complex 2D task structure (list is 1D):

To see:

1. Whitch task blocks the project.
2. Whitch task is not blocked to do right now.