I think that is a very good idea.
once we have REV-ENGed a module, it should start on the science tree as an original 'basic' module on the 'tree'
It doesn't even have to be at it's core base as good as the original either. Though over time with more research and upgrades it likely would become better. But it makes more sense. That's how we got a lot of today's technology. Though I doubt everyone believes we reversed engineered stuff that was found at Roswell. lol