Why would each team do this?

OKC do this because they fix their backup frontcourt problem without touching their core, add size + rebounding, and get a playable forward who fits their rotation.

Lakers do this because they gain 2-way wing depth that can defend and score, and swap DLo into a cheaper scoring guard role off the bench to keep floor spacing + shot creation.

Mavs do this because they add reliable shooting while taking on 2 second-round picks, giving them draft + trade flexibility later without hurting minutes for their main core.

Nets do this because they absorb an expiring contract for cap relief, open future minutes for their young players, and prioritize long-term financial flexibility.