D'Antoni is thought to be coaching for his job, but he's still got a tough decision to make. It's obvious they'd be better off limiting Westbrook's minutes alongside Harden further, but pull the trigger on that too early and you risk losing him and it becoming a distraction.
It's like '13-14 Wade, when they were clearly better when James was surrounded by four shooters, but always had to walk the fine line politically. Granted, the latter was a much more intelligent player.