Any osso bucco recipe will work for shanks. They come out so damn good you can feed them to people who normally won't eat game. I cringe thinking of all the shanks I threw out before I realized that.
On Bone broth from deer marrow bones--I've found that stock made from deer marrow bones will pick up a burned taste after 5-6 hours of cooking no matter what. I have had bad luck with them in that regard. I'll use deer ribs for bone broth/stock but not the marrow bones anymore. Or you can use the marrow bones but pull them out after a few hours. Never had a problem with other types of bones like that.
Other people might have different results but that has been my experience. Ribs, fine. Long bones, no (except the shanks in osso bucco type preps).