Is tanking even that big of a problem? In my opinion, the combination of the play-in tournament and more balanced odds at #1 pick have sufficiently discouraged tanking.
This season was supposed to be a huge tank-a-thon for Wemby, and yet... most teams were fairly competitive.
Looking at the first half of the season, only four teams out of thirty have less than 20 wins: Pistons, Hornets, Spurs, Rockets.
The only other team with <25 wins is the Magic (24-35), and they're not actively tanking. They just suffered a lot of injuries early in the season.
The remaining teams under 30 wins are:
None of those 10 teams have been actively tanking. They've just been dysfunctional for unintended reasons. Despite this, everyone still has a shot at playoff. They're all at most 3ish games back which they'll probably fight for. The only team that's actively gotten worse at the deadline has been the Jazz (and maybe the Blazers).