Interesting thoughts, but ...
Has NYC ever really been a desired WNBA city - so many pro teams, unstable management, so many pro athletes competing for market share ... yeah, some players wanted to 'go home' to NYC but how did that work out for them? Tina off to DC is a good example. Syracuse is a different world from NYC, and NYC isn't exactly my first choice for raising a kid. (NYC = 2 NFL, 2 MLB, 2 NHL, 2 NBA)
Seattle on the other hand has been a strong WNBA city with a lot of support for WNBA stars. One of the reasons to let Howard go was because they had Stewart and Loyd coming up as FAs and could afford all three. (Sea = 1 NFL, 1 MLB, 1 NHL expansion)
I would be surprised if Stewart chose the Liberty.