The increase you are suggesting(Since you bring up awakening event, im guessing you want gold for the blue gems) would do basically nothing in terms of how much gold you need to try and awake items to a decent awake.

For it to make an impact for the HC players, it would have to be game breaking rewards, Game breaking in the sense that it can easily be abused.

Curious as to what you think is fair quest rewards for these Medium-Long Quests.