One of the powers of the Krana Kal is 'Unleash the Bahrag'. This Krana would be compleatly useless! So why would they make it? I'll tell you what I think, I think all signs are pointing to the return of the bahrag. First off all- They wouldent make a krana with that power unless it was going to be used. Secondly- Gahdok and Cahdoks prices havent gone down at all, Just like the exotoa.
Why is that inportant? Because on the back of the last comic, one of the upcomeing events was 'The return of the exo-toa". Boath the Exo-toa and the Bahrag had a reilly short lifespan, but there prices dident drop. Later, We find out that the Exo-Toa is coming back. New bohrok hatch spacificly for the purpus of freeing the bahrag- and the price of the bahrag hasent dropped eather!
It seems like the toa are going to have to fight the bahrag all over again. No big deal, Right? The toa defeated the Bahrag before the went nuva right? so what would be the point of that? That leads me to the second part of my theory.
You see, The toa became more powerful just from a minute in the protodermis. What if the Bahrag where trapped somewhere full of protodermis? Remember the two lumps behind Tahus head? The bahrag probaly went nuva too, but got trapped in the protodermis when the cave collapsed. By the time the Kal free the bahrag, they pobaly will have been adsorbing protodermis for a MONTH. The bahrag would be super powerful, a force that cant be reconed with...