Sirtank wrote: Arcee shouldn't be taller than Bumblebee.
I know this is all from the show and all, but I really have absolutely no problem with FE Arcee's height, especially being taller than bee, who used to always be a tiny bot from the G1 days, as well as a lot of the comics. I find people see scale too much as a deciding factor in rank/power. I much prefer to drop size in regards to rank/ability. The only thing that I attribute to the physical characteristics of a lot of my TFs is how bulky (fat) they are in the limbs, and how that relates to their strength/resiliance to being damaged (A good example of a twisted exception is Bludgeon; all skeletal but somehow insanely powerful). It pretty much ends there, as I much rather revel in the notion that there is no one-step visual way of determining exactly where the bot stands in ability to kick another bots ass. More imagination, fellow fans. It'll free you for your scale troubles.
Side note: WFC Prime is perfect the size he is, as he plays a tough leader despite being nothing great in size. It just adds so much more dimension to my collection.