I dunno - they had the best offense in the league, but as Billy Beane once said about another thing entirely, their stuff doesn't work in the playoffs. Harden also has some limitations - some of which he's always had, some of which have come with age and injury - that no coach can fix.
In the end i think it's still roster and roles. Harden and Embiid with someone else as a true point guard? Harden and Embiid with someone else instead of Harris?
Or, say, Embiid, Maxey and Chris Paul plus an elite three-and-D instead of Harris? Embiid, Maxey and Lillard? (Probably no better a fit than Harden in that scenario tbh, plus you couldn't get him w/o trading Maxey probably.)
Was interesting to see not only that Joel was bummed about Doc getting fired but also that he preferred Doc to Lue at the time of the hire. I don't think he gets a say this time. But I don't know how much I trust Morey either especially if he is still committed to Harden.