Oh hell yes! I have wanted one of those Skull Trees since the moment I first layed eyes on them. I wish it were craftable at the Yog shrines. I have had enemies drop the Stone Skinning a couple of times, however it seems to be a very rare drop.
I know how you feel buddy. I am absolutely Crom crazy, and have been campaigning to get him some additional features since last December now. It is a slow road, but I am prepared to be patient. I like to RP on my game too. I have been doing the whole Cimmerian Crom zealot/conquerer theme on my game. For Crom!! 
Sure I all for that. I am actually one of the forums biggest campaigners for more brutality and gore in this game. After all it is the world of Conan 
not flowers and rainbows. It is supposed to be brutal. Yog has some great brutality themes/items. I suggested some good ideas in here:
Again…agree! That would be great for a Yog worshipper. Oh and myself too. 