Because it was fantastic? Against casters who have to use their whole combo to beat you, they can't kill you anymore. Champs that rely on some kind of opening move (like Eve or Annie) can't do anything to you outside of teamfights.
Although, a longer recharge won't really change how BV works outside of teamfights, and in teamfights it could always be popped by a Volley or something; but some teams didn't have effective Veil popping... and will still struggle with that.
Jeez, it didn't really change anything, did it? Not like teamfights often last 30-45 seconds, anyway. Maybe now an epic 1v1 between the two remaining teamfighters can be decided less-epically now that BV won't recharge as soon.