Amusing idea: Precursor Golem abuse.  The Etched Monstrosities are golems, and Precursors are amazing even by themselves if you have the right combat trick spells.  If the deck were to ease up on the myr in order to add in some Splicers and the like, it could do some rather silly things.  The deck will be more capable of engaging in fisticuffs (as it will have plenty of creatures that aren't just adorable mana generators) and will make use of amusingly brutal combat combos.  Also, I like the idea of being able to turn a bunch of golems into myr or a bunch of myr into golems (or both), and reap considerable benefits either way.