I would definitely like to see the Camaro come back... I'm sick of looking at import "performance" cars with buzz bombs prowling the streets. We need more domestic "muscle" cars, badly.
The GTO sounds like it's going to be a pretty sweet ride... the LS1 is a good motor that offers alot of HP potential. Plus, I love the fact that it's a push rod motor. GM did good with the motor, but fell on thier *** with the late model Camaro styling. The SS Camaro was a nice improvement, but not good enough, IMHO.
The rumor is that the re-released Camaro will have styling reminiscent of the 67-69 bodies... which I just happen to really like.

If they manage to pull that off, then I just might venture to the dark side, lol.
67-69 styling with LS1 power.... that would really be something worth looking into. We'll see. I'm not liking the direction Ford is moving with the Mustang, but I'll hold off on trashing them until the final product arrives.
I'll always love the Fox body Mustang, regardless of what the future holds in store for domestic performance.
On a side note... the Corvette
died after 1967, IMHO. The 63-67 'Vette is one of my all time favorite American muscle cars as well.