Tasks by Planner - customize template

Question

Hi,

I'm just wondering if we can customize the template in creating task in Tasks by Planner and To Do in MS Teams?

For instance, we want to add an additional custom fields on it or we want to show the auto-generated reference# of each task?

Also, is there a way to retain the last filter applied? for instance tasks assigned to me? so that I don't need to click on it everytime i access the planner