The Heroes of the Storm website has details on changes Blizzard is testing for Heroes of the Storm to improve gameplay flow in the MOBA. They are experimenting with lengthening early game death timers and a way of preventing matches from snowballing by adjusting player scaling with levels to make it less of a disadvantage to team fight when you are behind levels, though being behind in a talent will remain an obstacle. They are testing a custom version of the Cursed Hollow map on the PTR today, and will add this as a custom map for testing to the live game on Tuesday if you want to help them work through things.