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I've not noticed heat from the roof even on hot days here, but had the side windows tinted because of the solar heating through them. It helped significantly.
Do the newer models have a darker tint on them? The S and 3 we test drove in late July didn't seem to have a heat problem, and I was actually a little disappointed at how dark the pano roof was because I couldn't see much out of it...
lol the OP needs to move to AZ for a week in the summer and then talk about hot. I precool my car for like 5-10 minutes before getting in, and then drive with ac fan speed of like 5-7. Never once felt hot with my pano roof.