I don't really see why the NBA doesn't just take the top 8 from each conference and have a normal playoff bracket with all the games taking place in Orlando. I don't really understand the need to try any of these new ideas personally.
Sounds like the World Cup idea is dead at this point. If they ultimately go with the idea of seeding 1-16 regardless of conference, I don't like it but I don't think the road for Milwaukee is all that much tougher than the Lakers side of things personally.
Maybe the long hiatus and lack of home court advantage will throw things into disarray, but if it had played out as a normal season with the way the Bucks were playing all year, I don't really see anyone outside of the two LA teams (and possibly Toronto) as an equal. Flukey stuff could still happen, and obviously the Bucks would likely have to beat two LA teams instead of one, but Orlando, Miami, and Philly/Boston, aren't significantly tougher than Brooklyn, Houston, Toronto, and Denver in my eyes.
But again, I don't see why we shouldn't just play 1-8 and 1-8 like we always have if the season must come back.