I have an idea, what if Bots and Cons get an additional section that allows them to level up to level 12? The section?: combination! What if the higher the tech spec for combination, the more team members with which the core can combine?! The all the specs of that combiner would be the average of the specs of all combined transformers.
I think that would be a cool idea, and kind of a reward for the folks who have "maxed out" their tech specs already.