I realize that this deck is pretty dead, but I'm hoping that this new Mirrodin set my bring it back to life. I haven't seen anything earth-shattering in the spoilers yet, but I do like this card:

0
Memnite
Artifact Creature - Construct
1/1

It seems like a replacement for Arcbound Worker. No modular, but it plays better with Springleaf Drum and all the affinity cards.