Yeah, you could probably drop a steal or two and add in two larger darkness creatures; any two of dragon/vampire/gargoyle would be fine, depending on taste and what upgraded cards you have available. I usually do this deck with aether for fractal, because of how the pest with the mitosis gets this huge KILL ME! sign stapled to his face, whereas with fractal you don't have the one mitosis pest in play that's supporting the entire strategy; the key card is the fractal(s) in your hand/already played. I've seen people use cloaks in a mitopest deck to help protect them, but personally I wouldn't bother, as there are a lot of ways to destroy a cloak, and many of them result in your pests dying anyway despite the cloak. (thunderstorm, desiccation, rain of fire, pandemonium, etc)
