Kentucky would have a great chance IMO.
The state is basketball mad, as you can see in any UK or UL game!
Maybe base the team out of Louisville?
But then of course, if the team is based in Louisville, this may deter a lot of UK Fans from nearby Lexington.
Vancouver is't likely. Many high-ranking people happen to be involved with the Canucks ice hockey team, and they fear that an NBA team would threaten to diminish their already well establish brand.
Basically saying, Vancouver is a HOCKEY TOWN.
I think Seattle is the front runner, because Stern has publicly stated that allbeit the lack of a major Arena (which Seattle now has), the City was great for Basketball.
Las Vegas will never happen. Too much competition with other entertainment options. Plus its not a fmaily-orientated city, and that is where you want to build a team -- to attract youthful fans and their families.
A dark horse that everyone should watch out for is Kansas city
Very nice facilities and by all accounts their MLB and NFL teams are thriving there.
I know it would be weird considering the Kings relocated to Sac town FROM Kansas City