After just being beaten by a Void platinum deck, I can start to see how increasing its damage would be a mistake.
I had a classic poison dials deck with extra Shard of divinities to make a total of 6.
They played 7 shards against me (21hp/turn) and despite all my divinity shards, beat me down quite quickly, and thats ignoring any poison/damage which was ignored due to Shard of sacrifice.