Hi,
it would be nice, if when setting the task completion percentage of a subtask, that the "upper levels" also change in percentage automatically. It should be optional to do that, and then it should be choosen among two modes: derive the percentage from the length of the subtask (like if the subtask is 10% of full task time, and is finished by 50% the full task is increased by 5%), or from the amount of subtasks (like when there are 10 subtasks and one is at 50%, it will be increased by 5%, regardless of the length of the subtasks)