Sometimes in magic tower i forget to take the quest and start to kill immediately and after i kill i realized i forgot to take the quest(sounds dumb ik)(not sure if this happens to other people too)

So my suggestion is: if you take a quest and fails within 5 min then restore the mobs in the correct stage of the quest back to where they was before

This should help some people like me lol

Hope you get the point ^^ (and sorry for my bad english)