This is the risk you take by being an early adopter.
How disappointed were buyers of the iPhone or iPad 1 ?
Not, I think.
Was it a) because it was not quite ready for prime time, and subsequent updates fixed it, or was it b) because it simply didn't (and still doesn't) have features you wanted?
When the answer is a), that shows a product was rushed and not ready i.e. the Surface RT from the sounds of this review.
I agree, when those features are (were) available and cost effective at the time of release, AND they are in fact added at a later date, which somewhat proves they probably should have been added in the first place.
i.e. Complaining the first iPad was "rushed" because it didn't include 4G/LTE is nonsense.
By that measure, I honestly can't think of an Apple product in the last 5 years that was "rushed", where-as it seems the Surface RT was/is.