Sorry for bumping, but i'm second this. It's absolutely necessary.
Right now - only "chosen ones" (communities with skilled java coder) can run their own servers, cause you need to modify each block breaking mod for adding fakeplayer there - this is very complicated, and often, leads to random errors due to mod decompilation.
There is so much great mods, but all that you can do - ban 75% of the items, or run whitelisted server for friends. That is extremely bad...
Maybe i'm missing some way to protect server without decompilation? Please, let me know, if there is any