My bet is on JDZ being more of an AKPO than a NOGO.
Going back to kownski remarks that the sand zones extend right thru our blocks it seems unlikely the gas and oil in them all run out right at the JDZ border.
Said it years ago, but why worry now? If after further drilling in Blk 1 they find nothing and decide to leave the JDZ there will be plenty enough time to worry then. No need to get an early start.