Many people says: PE is cheat.
Can you make simple config "hardmode"? Like 1/8, 1/4 or 1/2.
If I "burn" 8/4/2 diamond = tablet will have EMC only for 1 diamond (8000)EMC (and from now tablet can copying diamond. If I have 8000EMC.)
If I burn 8/4/2 cobblestone = only 1EMC
1 cobble = 0EMC.
On the tablet there must be label "Now 1/2 (1/4 or 1/8) mode".
This "hardmode" must be turn in\out with command in the commandline (for OP).
Sorry for my bad English.
You make the great mod.