I've always thought the NHL should trade its Nashville franchise to the NBA for Milwaukee.
I can't see it happening.
Other than a potential rivalry with Memphis, why would Nashvillians have any more interest in the NBA, if at all, than the NHL?
As for Milwaukee, there is no way that a market that size can support three Major league franchises, especially when the Bradley Center is unsuitable for the NHL. In fact, without a new or refurbished Arena, Milwaukee is in danger of losing the Bucks--one of the league's storied franchises.
Interesting idea, though.