We got sort of sidetracked and started making feats for Orks, rather than feats for Constructs.
If you like I was planning to Retcon the Moar Boyz feat to require a Nob or Warboss feat first. You must qualify as "da biggest" by upgrading your physical stature in order to become the leader.
Nob
Soon I be da Warboss!
Prerequisites: Construct Type
Benifits: Your physical height increases by 2ft. In addition you gain a +2 bonus to Intelligence.
Warboss
I'm Bigga den you. Dat makes me Warboss.
Prerequisites: Construct Type, Nob
Benifits: Your physical height increases by an additional 2ft. In addition you gain a +1 bonus to Intelligence, Strength and Constitution.
EDIT: Oh Oh! Also since the WAAAAAGH! is a latent psychic field all Orks experience taking the Moar Boyz feat would represent upgrading your WAAAAAAGH! uplink. You send out a constant "I'm Da Biggest" command which you use to attract Moar Boyz. (Orks have a built in need to obey "Da Biggest")