Is this a game? Are there ways to incorporate competitions or goals into the project?
No, Visionmaker NYC is not a game. However, users may use the Challenges function to require other users to meet up to three specific goals.
How often will data be updated?
Is there a tool on the site that advises on logical or common combinations of landcover?
No, there is no feature on the site that suggests landcover combinations. The user is in complete control of their vision, and can experiment with innumerable different combinations of landcover. Explore the landcover of New York City (2014) or Welikia (1609) for examples of past and present landcover combinations.