If you then take into account the GCD it costs to use Aethercharge (which could have been another ruin), you potency gain is only 60 potency for Ruin 1, 30 potency for Ruin 2 and it is a loss of 10 potency for Ruin 3 (you only get 6 casts in, might be less if you take into account the cast time). Whilst yes, it does provide the gems, it doesn't stop Aethercharge, as an action, feeling underwhelming. Once you hit 58 and get Dreadwyrm Trance, it does pick up, as you do significantly more damage. To add, just to be complete, Outburst is a 20 potency gain, same points as above.
