I would think Pontiac would be wiser to offer the Firebird next time. The class that the GTO was supposed to compete in no longer really exists in non-luxury brands. The Firebird was a competitor to the Mustang by being in the same class. I think Pontiac just saw that they can't compete against BMW as they were hoping to do with the GTO. They ought to build the Camaro/Firebird and marketing the Camaro against the Mustang, and the Firebird against the Challenger in terms of styling and options. Chevrolet can be the bargin division and Pontiac can offer a few more features for a little more money $1,000-2,000 more, as well as offering a better top option engine than the Camaro. And a side note for people who do not understand. I'm NOT saying don't offer a base V6 model, or a lower level V8. I think the line up for the two cars should be like this.

Camaro engine line-up and transmission line-up

base 3.5L V6 (201hp & 222 ft-lbs of tq) 4-speed auto & 5 speed manual

Z28 5.3L V8 (303hp & 323 ft-lbs of tq) 4-speed auto & 5-speed manual

SS 6.0L V8 (400hp & 400 ft-lbs of tq) 4-speed auto & 6-speed manual

Firebird engine line-up

base supercharged 3.8L V6 (260hp & 280 ft-lbs of tq)
5-speed automatic & 6-speed manual

Formula 5.3L V8 (the VVT version with Ram-Air, around 320-340hp & 340-350ft-lbs of tq)
5-speed automatic & 6-speed manual

Trans-Am 6.2L V8 (VVT version, the new engine with more Ram-Airs, not sure about the hp & tq)
6-speed auto & 6-speed manual

Trans-Am Firehawk 7.0L V8 (Z06 engine) (add VVT, would produce over 510hp & over 475 ft-lbs of tq)
6-speed manual only

This helps to prevent the two cars from competing against each other. It allows people who want the cheapest performance possible to get their car, and allows the people who want higher-tech prevents to get their car. By offering a line up like this, you can fill in the gaps that will appeal to different crowds. Some might want more hp & tq than the 3.5L but don't want as much as the Z28. Some might want more hp & tq than the normal 5.3L, but don't want to go all the way to the 6.0L. The point of giving the Firebird two engines that would be superior to the Camaro's top engine would be so then the Camaro and Corvette don't compete with each other, and since the Firebird would be Pontiac's best car (whereas the Corvette is Chevrolet's best car), it deserves to offer a superior engine line-up. The Trans-Am would probably compete against the GT500 and the Trans-Am Firehawk would compete against a possible SRT-8 Challenger 6.4L. It might be a good idea if Pontiac would offer AWD as an option.

I also think they should use a extended version of this platform to remake the Buick Regal Grand National here is how I would do the engine line-up.

base (CX model) 3.6L V6 (the Cadillac version 255-260hp & 252 ft-lbs of tq, instead of the whimpy 240hp & 225 ft-lbs of tq LaCrosse version)
6-speed automatic & 6-speed manual

CXL 4.6L V8 (STS VVT version 320hp & 315 ft-lbs of tq)
6-speed automatic & 6-speed manual

CXS 6.0L V8
6-speed automatic & 6-speed manual

GNX supercharged 4.4L V8 (same as in the STS-V)
6-speed automatic & 6-speed manual

This will appeal more to the import luxury crowd by offering more refined engines. Offer the correct luxury options and it could be a success. I also think AWD models should be offered as optional for this car.