Title says it all. I'm not gonna get to everything but I'll try. I left out Primal to ensure I can cover as many bases as possible on Prime. I really wanted to include Powermaster Prime but he's similar to G1 and there's limited spaces. Same reason I didn't include the Marmon from his AOE Evasion Mode. I didn't include Fire Convoy's alt mode because even though that's technically Optimus Prime domestically the character wasn't originally intended that way and I figured it's more prudent to include alt modes designed with Optimus Prime in mind. My vote goes to the Western Star. Sexy.