I mean, maybe it's time to try and run it back and see if the new Bagley jumper is enough spacing from last year's starting 5. If Bagley wants to keep playing strong D like this and not being a sieve like he was last season, it makes that LU far more effective and easier to digest.
Or hell, maybe you get real creative and Len is the "opener" to get him on the floor with Fox and Holmes still plays 28-30 minutes off the bench and gets to destroy bench bigs. Gets him away from fully having to go vs the beefy Centers that Len is more well-suited to bang with down low. Sync up Fox/Len and Hali/Holmes where they can be most effective with each other. Holmes got his money and he obviously can see how effective Buddy has been off the bench with not much of a role decrease at all.