Im not too changed on my guess. SS label may change its direction on all cars, but the performance to be had is yet to be measured. A z28 could still shine more in the handling, like a z51 vette vs. z06 (both have suspension and trim upgrades above the base vette) I can see a z28 being a hardtop only models with lightweight hood and other panels. The SS could be a GMPP parts golden boy compared to it base V8 mold (bigger brakes than the V6s and base V8, LS3 optioned, GMPP performance parts and tune).
And as for "drag vs track" focuses, I see this a "camaro for everyone" tactic; something that mustangs shine at (unfortunately that means everyone has one). I think this would sell the car and out do the mustang on the road and in sales.
Mustangs have the Shelby GT now, its basically a FRPP drag pack thrown at it. A regular GT can also have a drag pack option installed (CAI, tune, Springs, and drag bag). The FR500 handling options with stuff like whipple superchargers can be had for the GT. And they even have a lightly FRPP modded model, the CS/GT, that basically what a "RS'' package would be like.
And finally, the GT500, its has its place.
I hate to keep bringing up mustangs, but they do kick ass in sales (because of the "mustang for everyone" tactic) and I want to see GM beat them every year after 2009 with the new camaro. If SS label mean better performance in all catagories, then I think anything suspension (drag or not) upgrade would be better than the base V8. Im not saying a mullet dragster with ladder bars for the SS, or tube chassis Z28; I just think GMPP parts can define a model into a mold and still meet ''better performance" from both models.
But again its just speculation and I have a wild imagination. But after deciding to come to the GM camp, Ive wanting to see more GMPP performace parts. If Ford and Dodge is smart enough to back FRPP and Mopar, then I think GM can blow them out of the water with superior genius.
I love this issue, Im in suspense on not only what engine to be used, but how the variety of models and engine option equipped models will be defined. I would be disappointed if GM did the same model labeling and option as the 4th gen camaro (I think the firebird had better trim options, due to having more) Here are some speculation and imagination threads Ive started before on the issue.
About Model defining>
http://www.5thgen.org/forum/showthread.php?t=2369
I like the GMPP wish list in that thread, it rivals the FRPP catalog very well.