So the turks have been steadily losing ground. With the introduction of the bohemians, and then the hindustanis… its just they feel too bland. They have lost the edge that makes them the premier gunpowder civ.
After some thought, what if the turks had a unique tech that gave all gunpowder units passive healing, similar to how mahgrebi camels gives all camels passive healing? The turks already lack herbalism, so passive healing is definitely a thing they need. Also, while it is a buff, its not a super strong buff to combat. Its more of an economic buff, since it means that turkish bombards wouldn’t need gold to repair, and turkish troops wouldn’t need a priest to recover, given they had enough time.