User blog comment:Lykrast/A suggestion about Flash/@comment-11623843-20130706182247

1000 cast range is huge. Anyone who has trouble initiating could just take flash and have no worries. It would be a large buff to champions like Galio and Darius who need help getting in range.

On a side note, Dota 2 uses this exact idea with an item called the Blink Dagger.