The OP's question keeps popping up and I think it is possible that the latest scandal (e.g. the hearings in Australia) may be able to provide a clue as to whether the GB is delusional or con men. If the history of cults is any indication, and If they are delusional, they are likely to become more draconian, insular and settle for a smaller number of JWs that are COMPLETELY committed no matter what and will follow the "God Inspired" GB to the very end. If, however, they are con men, I can imagine that they are likely to bend and flex a bit more to accommodate the authorities and keep the game running.
However, no matter which path they choose, they will suffer. If they become more draconian, insular, etc. they will likely loose a younger demographic. If they flex and bend to accommodate the authorities, they risk loosing the older demographic which may see this as a weakness that maybe shake their confidence in the GB.
Can't wait to see how the GB counter-punches this last scandal. That should say a lot.