Thanks. 
This doesn't really effect my idea at all, I had in my mind that the people I would create would serve the god most likely to have something against dragons and each one slain would somehow help the town, either by a magical gift or just the riches or both. 
Maybe the dragons' magical power, or a portion of it is given to the slayer? 
Now that I've written it out sounds a bit too Skyrim. Of course it wouldn't be as common as dragon killing in that but if someone managed it they could possibly be the most powerful of the age.