I've had my Nexdome (just the dome part - not the body) for over 4 yrs now so can't respond about recent purchases.
While it isn't essential to motorize the rotation of the dome...it is highly recommended as you will end up manually moving its position every 1/2 hr - 1 hr otherwise. That becomes tedious real quick.
The shutter does not need to be motorized - unless you plan to be 100% remote? If not, then its simple just to raise it manually. Note that I have both the rotator and the shutter motorized.
I also stop the shutter shortly after starting to open it to wipe of dew/rain that may drip just a bit - so because I am not remote (100' from the house) the shutter is more of a "cool" factor