I thought it would be interesting to have Gargoyles spawn in the world outside of the Dawnguard DLC. I was kinda thinking something like the old cartoon where during the day they would turn into the statues and at night they would come to life. You could find them around old ruins or in the forests of skyrim. They could range from the weaker ones to the stronger ones (not really familiar with their levels but I know there were stronger ones).