Interesting angle. I hope it takes flight. Personally I don't like the 'green recruit' scheme. It just doesn't fit with the Stormtrooper fluff. These guys are supposed to be hardcore, brainwashed fanatics. But the Imps have many other troops at their disposal. Some are a little more... well sane and human.
Oh, and having the Imps discover the base on Dantooine seems like a bad idea, because they are completely unaware of it at the beginning of A New Hope (at which point it has already been deserted for some time).