Some interesting possibilities.
a pair of Voyager/Leader 2-packs: an Optimus Prime/Jetfire 2-pack (with Jolt in the backdrop having as much dimension as he had in the movie), and a Megatron/Burning Fallen 2-pack.
a pair of Deluxe 2-packs: an Arcee Triplets/Sideways 2-pack, and all-new molds for...