I think (but could be wrong) that it would be easier to deploy all the sats in a given launch to the same orbit. Either way by nature it will be a limited service during the early stages. If one sat in a string fails it may mean they temporarily have a broken string (ie. two smaller strings), but with 20+ sats launching every few months the crisscross "mesh network" will quickly take shape to link them again and begin to provide redundancy.
I will endeavor to find out the finer details of the planned launch order for building up the constellation and what service we can expect early in the piece.
SAS Price at posting:
6.9¢ Sentiment: Buy Disclosure: Held