I always wonder why people care what a convertible looks like with the top up...if I need to have the top up due to weather I don't drive a convertible...if I am driving it, the top is down unless I get "caught" in the rain.
Anyway, as far as the roadster goes, I like it so far; slightly better than the 350 roadster (I had an '08 roadster) but I'm going to reserve judgment until I see one in person.
Frankly, while there is no "official" definition of what makes a spots car a true sports car; most of the automotive community older than or old enough to remember when there weren't such things a "video games" and cell phones and CD players will tell you that the only true sports car is a two-seat roadster...anything else is a "sporty" car...maybe a great performing sporty car but a "sporty" car nonetheless.