As we saw in the ending of Regeneration(Which is one of the best episodes of TFPrime in my opinion) The Decepticons had the kids and left with a cliffhanger. Now the death I was talking about in the title was not Ratchet but maybe Optimus? I mean he could sacrifice himself for the kids and Cybertron,and I read somewhere that the Autobots are at a huge disadvantage in Season 3. So maybe that's the disadvantage. It might sound far fetched but will Optimus Prime die in Darkest hour?