You have no idea how much gun powder the mob trap produces...
and it is only half finished...
But seriously: the offer still stands for me to increase the rate of cobble production by adding a few more cobble generator bits...
Edit: I have made an example of the 2x2 cobble generator by my red house. It does not have the pulse generator refinement for starting the clock and the timing could be better optimized, but it's fast... I will leave it up for in case Brad wants to modify his nether one or anyone wants to build their own...