Since there aren't any automations in the to-do kanban view - it would be at least great to have an option to automatically sort the tasks marked as completed to the top/bottom of the column
So if you complete a task in the middle of the group - it would move out of the way and all the incomplete things would be groupped together
For context, i'm not using a classic To-Do/In Progress/Done column structure, but individual columns per feature of the project, so it would be great to have a little help keeping it all tidy!