Ahoy. I'm new to this thread. I generally don't like the idea of cooking one rotten flesh into leather. I have considered, and generally liked the idea of converting multiple rotten flesh into something that can be turned into leather, and have thought of 4->1 and cooking the result.
I actually like the idea of the "hardcore" version needing bonemeal; I'm not really sure how it makes sense.
Why not make only one version with a config file? You would have 4 versions to manage each update instead of just one when a config file was used. Even the hardcore version which I use could be a configuration option.
glad you got a standard and hardcore for this, and that you have it working for the 1.4.6/1.4.7 MC, but any chance you could give this a Real Version number so if you was to update we would know you made a change, to say the 1.4.6/1.4.7 of it. in other words, instead of saying it is RottenFleshtoLeather 1.4.6/1.4.7 you would have RottenFleshtoLeather v1.2 for 1.4.6/1.4.7