I think the East will really separate head to head the last two months of the season. There are really only 3 flat out bad teams in the east that would be sellers at the trade deadline. The magic really don't have much to sell aside from Ross. The pistons have actually been playing a lot better since they started getting a few of their vets back (KO, Grant) and development from Bey and Cunningham. After literally being on pace for the worst record in league history they have passed the magic and have almost caught the Rockets. However they could regress to all time bad levels if they do dump Grant and KO. The pacers would like to mix it up, but I am not really sure what they can do since their tradable players are currently injured. The other mediocre teams, a level above bad, like the knicks and wizards are going to be in competition for the playin all year long.
The west, well there is just a mess of really bad teams there now, and some of them are going to have to give up on the pipe dream of making the playoffs soon (looking at you sacramento). Though marginally better than the Pistons and Magic. Houston, OKC, New Orleans, Sacramento, Spurs, Blazers (especially with no Lillard), Clippers without George or Leonard (and rumored to be sellers at deadline) is a pretty shocking amount of bad teams. A good amount of these teams are going to shut down some players the last month of the season to try and improve their odds (we saw houston and okc do this last year so they will most likely do it again). I don't really know how someone can look at the amount of bad teams in the West (it has become worse because of the injuries to George, Lillard and zion not coming back) and not accept the East is a deeper conference at this time.