Too many calories in too much butter, Koukou
With the biscuit/scone topping, it sounds like an old style chicken cobbler. Like a peach cobbler but with chicken. Sounds great. Just depends if you want a flaky topping or a more solid cobbler type top to the pie. The biscuits soak up a lot of gravy, just like dumplings.
Try it both ways, see which you prefer.