I'm very skeptical that we'll see Blatt run "the weave". I don't really know crap, but I imagine that many NBA players would raise an eye brow or two if their coach came in with a straight face and asked them to use it in a game.
Sure, the weave looks cool when the Globetrotters do it. It could be useful if you got a 30 second shot clock and the defending guards can't switch or lack detailed scouting reports. But in the NBA? Most guards can switch for a second or two, they know how to jam handoffs, the shot clock is only 24 seconds and the defense has detailed scouting reports. Maybe the weave can get you a good matchup eventually, but would there be enough time left on the shot clock to take advantage of it? There are quicker ways to get a matchup that you want. I think the play opens too slowly, is too easily solved with a bit of scouting, and has challenges when you got an NBA shot clock and NBA defenders.
When I heard that the Cavs might run the weave, I pictured the reaction in the locker room could be a similar kind of WTF that you'd get in the NFL if a coach came in and started to diagram the wishbone for his team. There are reasons why that play is extinct at the highest levels.