Getting armor, weapon and valor upgrades via retraining

[andrewt]

How do people feel about this? It might be a balance change but I find it kinda cumbersome to train a unit then have to retrain them to get the valor, armor and weapon bonuses from buildings in that settlement. I've retrained some Venetian heavy infantry and the retraining costs to get the upgrades they have available (valor+1 and second to last plate) is 320 florins. I think their base cost is 570 or something so it's pretty expensive.