2.5 stars
This novella is like a lump of clay that a sculptor has only just begun to work on.
One can see the very basic form it will assume, the collection of ideas and impressions that Martin has bundled together. However, he simply hasn't added sufficient contours or details to any of it yet to enable us to know if it will turn out to be a car, an elephant, or something else entirely.
I would like to state that this is a pity, but I don't believe the characters as Martin has conceived them possess much potential as characters, even if he were to sculpt them more precisely. They are, well, just not very interesting. They are completely non-nuanced, flat-as-pancakes characters with rather generic problems that would require a whole toolkit to make them compelling.
An average 2.5 for this grey-brown lump.