A peciuliarity of the Orks as a species is that there is no such thing as a "strong-but-dumb" or "weak-but-smart" Ork. (Oddboyz aside.) Ork-Mobz are ruled by the biggest, strongest, meanest Ork. Always. My suggestion: For Orks, the Squad-leader position is revolving. Whoever has the most kills at a given moment, is the Squad-leader. 1. Ork-Mobz in EC would always be lead by somebody who knows what he's doing. 2. It would give the Ork-faction a unique flavor. It would give them that little special extra that no other race has, but without breaking faction-balance.