News that the Shinnecock Indian Nation had renewed plans for a casino development on its land may have come as a bit of a shock to some this week, but it was a long time in coming. The small community has a minimal tax base, which leaves it chronically lacking the kind of amenities enjoyed by residents of the nearby towns and villages. These include some basics, like roads and other infrastructure and social services. Income from a casino — and the tribe’s two giant illuminated billboards alongside Sunrise Highway — could fill that gap.