Flash, I see your point
I disagree slightly, but I do understand exactly what you mean.
I suppose I think they'll be unlikely to use the LS7 only because there wouldn't be a market for mass-production of an LS3/L99 Camaro, an LS7, AND and LSA... but I do think that using the LSA is practically like intruding on the exclusivity of the Corvette's powerplants in the sense that it is more powerful than the LS7 and much like a de-tuned LS9. I suppose the end result of our reasonings are the same though: we will likely not see an LS7 Camaro :(
I'm still holding out for some kind of a 'special edition' that they might throw together with larger motor and factory warranty. But then, a 427 5G Camaro is my wet dream :P