Really? If it already does have both board space and traces for a 3G/LTE modem I absolutely would want it populated! How much more would it cost?
it's not about calls for me. I really hate when I have to tether to a phone. To me , tablet without cellular connectivity is crap for outdoor usage. Oh, and I see no point in 4:3 screens when absoulutely everything else is 16:9 or something similar.
...and this why we will never have anything. The moment you offer something, the first two responses you get are demands for something else