I'd be willing to try to help you with character alt modes in your story if you give me a character roster and the basics of what you want personality and vehiclewise. It sounds interesting and really fun if you still want some help.
Here are my ideas so far The Series is called TF:The Animated Series Because i could'nt think of a name the Characters are: Optimus Prime Megatron Bumblebee Starscream IronHide Soundwave Mirage Barricade Rachet Blackout Sideswipe Dreadwing perceptor Shockwave Jazz Cliffjumper and drones u can create a backstory if u want or Something like this Sideswipe never speaks Optimus has a agenda Megatron wants the Matrix from Optimus Dreadwing Kills Autobots for fun And Cliffjumper is looking for someone I Will keep u updated