I have to agree with Dm here, the Graviton series seems the most interesting one by far. I especially liked the duos where you found a great name to represent the deck - Graviton Saboteur, Graviton Flame Thrower, Graviton Siege Engine. (Well, the latter is no duo)
Some of the more simple Graviton decks could use a rework. Easy to beat doesn't necessarily have to mean boring. All in all, some great ideas in that series.