Yeah MB is cutting some coupes and convertibles. The C-class and E-class coupe will merge into one model, the CLE. With the SL going 2+2 it will also fill the void left by the S-class coupe.
Depreciation on Mercedes is no joke. I took my E500 in for a recall like 2-3 years ago. One of the salesman asked me if I was interested in trading up, I said sure. He went and got all the info from my car and came back with a trade in offer of $3k. Ouch, I had paid in the $40k range brand new and now it only had 38k on the odometer.