1 - I think that Horford plays better starting as the 4, rather than the 5. See the Baynes Horford lineups last year.
2 - I have also noticed that Williams, who still has some shortcomings (offense and rebounding), truly effects the opponent's interior offense. Not just his shot blocking - he alters shots or even prevents shots from going up.
I propose starting Williams at the 5 to shut down interior offense - Smart on the perimeter.
I think adding Morris back to bench will strengthen it.
Williams/Theis/Baynes*
Horford/Morris/Yabusele
Tatum/Hayward/Ojeleye
Smart/Brown/Lemon
Irving/Wanamaker/Rozier