A major change for 2019 Iíd look into if considering a Sprinter (and Iím not) is that they now offer a 4500 model with 5,500 kg GVWR, whereas before it was limited to the 3500 model with 5,000 kg GVWR. That difference is about 1,100 pounds of added payload, which may come in handy if motorhome is on heavy side due to size, number or size of slides, holding tanks, diesel generator, etc.
Maximum GVWR goes up from 11,030 to 12,125 pounds in American.
Also note that for 2019 the dieselís transmission is a 7-speed. All combined these changes are a lot to consider.