I agree. The main reason I went with a tablet in the first place was an attempt to get away from a device locked to a particular service by a particular company. I am fairly successfully using SIP via hotspots without being chained to a particular provider.
While I am sure integrated cell hardware may interest a lot of people, I have zero interest in it due to the crappy protective duopolistic cellular market I live in (Canada) and hope that Nokia doesn't forget about that part of the market. I would eventually be interested in upgrading to a tablet with a faster CPU and a better camera but I wouldn't waste money on integrated cell hardware.