Make it easy to choose today/tomorrow as due date
(I think the Android app had this feature in an earlier iteration.)
Please make it easy to choose today/tomorrow as the due date, by displaying them separately from the calendar. When you are creating a new task, it's not a big deal, because the calendar will show current date. But when you are changing the due date of a long-overdue task, it becomes a pain. You not only have to shift through the calendar to arrive at today, but Todoist doesn't help by not making today more conspicuous.