Goose, when cooked correctly, will taste a bit like prime rib crossed with poultry- it is delicious! The key to smoking a goose it not overcook it which is why I suggest to cook until the internal temp is at 145 internal degrees.
I made gravy with the drippings and giblet and it was a nice addition, but it didn’t need it. Note that there are plenty of other recipes out there where they call to marinade the bird overnight or brine. I felt the Goose turned out great without all the extra steps and I think this can be attributed to how well the egg cooks, smoky flavor and watching your temps! Plus, goose is damn good!