I don't know how to react to this. On the one hand, it is a great thing, enabling cheap reliable distributed power and providing a stable power source for remote communities. Yet, I cannot help but think about the huge proliferation issues this may lead to in the long term. It will make access to radiological materials easier, particularly in countries with little-to no security capabilities that might want this most in the first place. It will also probably spread nuclear technology. Once a country buys a reactor, it will want to develop the capability to refuel it itself (and some to build it themselves in the first place) and will thus have an excuse for building enrichment facilities. I don't see this as a rosy development in the area of nuclear proliferation.
We will also see how nuclear waste disposal will occur. If sell such a supposedly hassle-free reactor is sold to say the Central African Republic, I have strong doubts that nuclear-waste disposal is going to be dealt with responsibly...
I can see the enormous potential of these mini-reactors, but the associated problems could be considerable too. I have not made up my mind yet as to whether the positives or the negatives predominate and this despite the fact that I am generally supportive of nuclear power. Regardless, I do have to say that this is innovative and exciting in the technical/economic sense.