....it seems no Decepticon of any merit still lives. I think the next movie, should we have one, has only really two options: 1. Unicron 2. A new faction 1. Unicron would be the easiest route. Have him create Galvatron from Megatron's lifeless corpse. Unicron promises to restore Cybertron to its former glory in exchange for the destruction of Prime and his matrix. 2. A new faction or enemy force. Quintessons perhaps or an entirely new concept. Where else could it go?