Woody,
I googled the Nissan e-4WD and it brought up a blog which was discussing the Nissan Tilda which is the non-US version of the Versa. Apparently it has the e-4WD and someone questioned whether they could add this feature to the Versa. The response was that is wasn't worth the money, and a lot of drivers in Japan were getting stuck in the snow with this apparatus because they thought it worked like a real 4 WD system. The blog then stated about it working only from dead start and the system shuts itself off at some designated kilometers/hour which was roughly the start of 2nd gear. I am thinking that may be why it has to be paired with the automatic CVT because that way it would shut itself off before the car goes past low gear.
It is a fact that the 4- WD system diverts engine power to run the rear wheel drive generator, and it may be for that reason that it has to shut down because maybe the car can't run past a certain speed with the reduced engine power. Anyhow, it would be obvious enough on a test drive to find out when it shuts off and if it would really be of any benefit, I usually have to drive in at least 2nd gear to get around here in the snow. If I am going to have to carry around a set of chains anyway because the 4WD may not work in anything more than a flat parking lot, may as well just invest in a top grade set of traction tires as those may prove more useful.
Regarding the sunroof, since the sunroof is already on the 2nd generation model Cube based on numerous photo shots I have seen on the web and is an easy factory install and I would think it is a given that there is going to be a higher option model which would include a sunroof. I just hope any high option doesn't also require to have the CVT transmission. Maybe it is okay, but if they have been using mainly the manual transmission in the Cube up until now I am sure not going to go buy a car which they just slapped in a new CVT transmission for the US market and then have to deal with all the new quirks to be worked out.