Simple concept to make Training better (and even desirable):
Rename Training to "Efficient"
In addition to increasing training, you gain X% bonuses to weapon/armor passives (based on which items the traits are equipped,). This would would make the concept that these weapons are better in the hands of skilled individuals, making them able to get more out of them than others. The goal is not to give the passives a large buff, but just one and sets them apart from other traits with something unique.