Is it possible to add a method to get the ritual stone type to IRitualStone so that a mod author (me) can implement additional ritual stones, without having to rely on metadata?
If done, I suggest one parameter of the type net.minecraft.world.IBlockAccess, and 3 more of the type int to be the coordinates of the block in the world, so that we can access the TileEntity and the metadata ourselves.
I'm not asking for now, just next time the API needs to be broken for another reason.

Thanks for adding it :D