Mercedes is looking at bringing the R class back, Mercedes feels it was essentially the right vehicle at the wrong time...
http://www.autonews.com/article/20150619/OEM04/150619828/mercedes-benz-mulls-revival-of-r-classKurz says Mercedes-Benz is still interested in roomy, on-road based crossovers.
"There was already one that we had in the portfolio -- maybe we were too early -- which was the R-Class, which we are still selling in China. It’s doing good, with 12,000 to 14,000 units per year," Kurz said.
The departure of the R class from the company's lineup left a hole in terms of size and utility, with only the GLE and the GLS offering similar amounts of room, though in a distinctly SUV wrapper.