I am not sure much could be done to address this now, but I am 6'2" and I have a sunroof and I barely have enough headroom. Sometimes I can feel my hair bumping the roof. If the sunroof was wider then it wouldn't be an issue. In my 4th gen, the t-tops add alot of extra headroom, and my firebird is a much lower car than the Camaro. I am used to it though, and I am glad that I can fit, b/c that would be a major bummer to be like 6'4" or taller and not be able to drive the Camaro. I've heard the non sunroof car gives an extra inch or so, but I have to have a sunroof in my ride, I love the extra light and airflow in the warmer months.
As others have said, I'd like to see:
GM licensed turbo/supercharger kit for V6
user defined multi-colored lighting for ambient lighting, gauges, stereo, etc...
HD radio with itunes tagging
touch screen Nav
'16 NFG 2SS M6, NPP Exhaust, black center stripe, black non-split rims
'96 Black WS6 TA - M6 Conv, Pro 5.0, Baer Track kit, Corsa Cat-back
'11 Silver Regal Turbo - 6 speed