Thanks for the feedback!
You're actually not allowed to give models more than one Caste. In writing this I realized the confusion, from "Each model has one or more Suits assigned to them." That's explanatory, not a direction. In Step 4 of warband creation, "Assign each model a Caste." I can make that more clear, though.
My main game is Malifaux! I actually took more inspiration from the boardgame Maria, though my love of 'faux probably bleeds through a little.