You asked for opinions, here's mine.
I purchased the coupe (not the roadster) because of the beautiful and unique roof line and wouldn't think of altering that in any way. I've seen the photos of the sunroof posted on this site. IMHO a sunroof mod would ruin the look of the entire car. Open the windows if you need air. The sun is bad for your skin. The roof protects you from getting pelted by debris and keeps your hair from getting messed up. Nuf said...
Peace.