We have reports showing which people are assigned to pending tasks, so that other users can follow up with them if it's not getting actioned quick enough. When someone manually delegates their task to another, the report becomes incorrect and other users no longer know who to contact regarding a pending task.
Thank you very much for posting your feedback for our review. At this time, we will not be adding this request to the near-term backlog, as we are focused on other highly requested features. However, we reevaluate requests every quarter and will reach out if priorities change. Please keep the feedback coming as it is critical for our longer-term planning.