how do you define which bonus is "local" and which is "major"? because in warlight currently all bonuses are the same level.
Best I can offer is some sort of static rule.
Deploy armies from bonuses in a fixed order (if multiple bonuses).
First do lowest value bonus first (number of territories is the best option for value I think), if tied do bonuses by name.
So you would deploy from local to major. And players would either know or learn the order when playing. And doing something like strategy 3 in Fizzer's uservoice post, while looks like an ideal solution sounds overly complicated and might not work that well in practice imh.