well chances are if you build an army centered around 2-3 knight buses, a peasant roadblock, treb or 2, some bowman and fast cav, your army won't be "gutted." except for the addition of trebs and peg knights, the core of bret armies hasn't changed much since their 5th ed book. if you build an army around a gimmick like the bret "RAF," you stand much more of a chance of being stuck with something unusable than if you just build a balanced force.