This is, I think, a preferable solution - some sort of free upgrade for hiring multiples.
Hire 3 Mages, all Oxfordians get a free Suit.
Hire 3 or more Dogs, one Dog is Pack Leader, gains Pack Mentality (+1) always on, and gets Follow My Wag, or Coordinated A Pack, or some other Dog-only version of a medium-impact utility skill (bearing in mind that impact is tempered by Dog-only).
Aside, I've noticed that a lot of cheap Minions have a Trigger for every Suit somewhere in their actions, so perhaps this was intended to be some sort of flexibility thing allowing max value output, it just doesn't really work in execution.