Well, I thought they would be just rumors...but we now have official notice that Star Wars and Transformers have collided. I know before that I wrote that crossover stories were a bad idea due to the property owner's rights involved. But since we now have an official crossover at least in the toys I'm going to say anyone who wants to do art/stories etc. for this line are free to do so for the TransMasters Magazine and Comic. Below is the web address for the official Star Wars toy site with their article on these new toys.
Star Wars Transformers Site
I guess I should warn you of their legal junk, but I say scrap it, just make sure you put this:
Copyright Lucasfilm 2005. All rights reserved
on any of the Star Wars Transformers stuff you may create. If there is enough of this type of material I'll put it in the normal TF disclaimer area.
Here's my quick take on a possible story line: This is an Alternate Universe story where in this Universe Unicron devoured Cybertron a long long time ago. The Empire came across some scattered remains of Transformers that escaped the Chaos Bringer's big meal. Though these were sparkless corpses the Empire was able to advance their technology through what they learned. In an effort to counter the Empire's edge, the Rebellion captured one of the dormant newly excavated Transformers. This robot does not seem as severely decayed as the others and the Rebellion Technicians are capable of repairing it. To everyone's surprise this turns out to be Alpha Trion or some other ancient Matrix Bearer. Through twists and turns we will come to learn that Unicron still exists and because of the bearer's reactivation he's now headed toward the Empire. To cut to the chase the story would end in a bang where Obi Wan has to keep Darth Vader and General Grievous busy while Luke uses his robot to deliver the Matrix into the heart of the power converter on the Death Star, which then will either be a new body for Primus or just blow Unicron to atomic particles..(Hey why not both?) LOL. (Don't expect me to write this up anytime soon, I'm probably already over my head on some stuff, but feel free to run with your own ideas.)