Be careful what you wish for. There's no way a trait is going to potentially increase DB's effectiveness to 8x of standard and give WHM arguably the strongest burst shield in the game (while only costing lilies). None. If they did this, DB would get nerfed massively.
Secret of the Lily II is so weak that you could remove it and almost nobody would even notice. It definitely needs addressing. This isn't the way. I'd rather them see do something like "20% on Cure/Cure 2 healing to make your next Stone instant" or some such, as that'd help you keep up personal DPS in situations where you're needing to use more Cure, effectively playing up something you want to be doing anyway without stepping on the toes of anyone else.