I love the idea of minions, but I'm not 100% satisfied with the rules for them in the rule book. Traits in Particular needs a change imo. If a player get the choice between Machine 1 or machine 6 at the same cost for their minion, chances are that they will go for machine 6 9 0ut of 10 times, unless the Gm imposes some restrictions.
Characteristics also seems to handled pretty strange imo, so I felt the need to change how the minion rules work before launching my Black Crusade campaign.
Jackal_Strains Minion houserules.
Talents and Traits may be exchanged for Characteristics points, at the rate of 10 Characteristic points for each Talent or Trait.
Characteristics may not exceed the maximum for each level of Minion Talent (30 for lesser, 35 for normal and 40 for greater).
Talents may be exchanged for Skills at rate of one Skills for one Talent.
Talents may be exchanged for Traits at the cost of one Trait for two Talents.
Traits may be exchanged for Skills and Talents at the rate of two skills for one Trait and one Talent for one Trait.
Traits that come in levels (eg. Unnatural characteristics, brutal charge, machine etc) are bought at the rate of one for one. So unnatural agility (+2) and sonar sense would reduce the pool of available traits by 3.
Lesser Minions get 6 Traits, Normal Minions gets 10 Traits and Greater Minions get 14 Traits.