task deletion controls needed

Not being able to designate who can delete a Task or not restricting that ability to the owner 

is, quite frankly, irresponsible and contrary to good management.  I understand the whole "collaboration and empowerment" concepts being touted.  Entire projects can be derailed intentionally or accidentally.  I bet that the vast majority of Planner users don't realize this flaw and if they did  would be as frustrated as I am.  I thought I had found a really good tool to track the multitude of projects and programs.  I put them all in Planner only to find out anyone in the plan can delete any task....poof! Its gone.  Telling users to go to a third party for a fix is shameful.  Fix this Microsoft...it's not an "enhancement".  It's a fatal flaw that needs to be fixed NOW.