User blog comment:Lord of Harvest/My suggestion to Darius's ult./@comment-94.187.88.6-20121015170820/@comment-67.1.89.141-20121016145003

Thats the problem though a good darius will try to freeze the lane as close to his tower and either zone you from farm or kill you when you try to do so. This way he still has the same power he does in a teamfight finish off someone then ult another to weaken them (or ks more kills if your selfish). But he is not going to always have the ability to fight you, Imagine how annoying it must be to be playing riven use your combo and then loose the fight to him. Your ult is now down, but his ult is up again so then he continues to dominate. I really like this proposed change and hope that riot will implement it with say a increas to say 15-20 secs because 10 is a bit short.