Questions re Heroic Mode:

1.Can you explain the design philosophy behind making Heroic Mode epics harder and harder to get while making all other routes to epics easier (more awards from wars, fusion even chest rates upped)? It's not as if the heroic mode armors are better than what's available otherwise.
2. This isn't specifically what the drop rate is, but rather are the heroic fragment drop rates purely random, or are they or can they influenced by player actions?