After Luka trade, does it make sense to trade Reaves for a big who can contribute?

Honestly, I just don't see Luka-LeBron-Reaves on the starting lineup running the offense all together.

Reaves is too nice, but Luka basically does everything he does at a superstar level already, minus the defense.

I believe it would put us in a win-now situation even, to trade for a capable big who can first defend, and create offense through Bron and Luka.