It doesn't matter much if the top teams stay the same or get better. It might inflate the record of the better East teams, but that doesn't really help you except if you're trying to get home court advantage against a Western team in the Finals.
In terms of draft picks, BKN having to face more crappy teams in the East might inflate their record which is bad. Indiana, Chicago, and Atlanta now look to be formerly OK teams who will be pretty bad next year. Toronto and Detroit it's uncertain.
On the plus side, the Lakers should pile up a few more losses due to Western teams improving or staying competitive. The only teams that you could say are going to definitely be bad are Sacramento and Phoenix. You could say Dallas might crash the party but they've never been a team to totally tank, and Carlisle is too competent a coach.