I saw some CLA coupe renderings before, they never looked as good as these! If Mercedes can actually pull this off with more of a sleek and lower roof line then they will have a winner on their hands.
most people buying a coupe, especially a compact coupe won't care much about rear passenger space since they wont be using it that much. It's basically a car mainly for one person.Regardless of whether the CLA is truly a coupe or not, I don't think it needs a two door version. The CLA already looks great as it is, and like I said before, the back seat space is already lacking space, and taking away the back doors would just make it feel even more cramped.
If you don't care at all about your back seat than why not get a little roadster instead?