Seems like the Ring Always Home Cam is better for that. It gets a clearer mapping I'd figure. I guess they don't plan to sell many of those.
Don't forget about Amazon's Ring drone that flies around the house...
Drone cam has detected spilled Cheerios. Roomba, deploy to grid sector A7. Alexa, order additional Cheerios, honey nut variety, family sized.
I find it unlikely something will ever be built for DJI consumer drones. The new enterprise line of drones offers a base station that apparently supports some level of automation for professional filmakers.
For us consumers, the closet thing we will have that might possibly be triggerable in HA is the Ring drone from amazon