I disagree. Nico will never be a SF. We will get torched on defense if Niko played SF. Jackson has not proven he can run safely as part of a NBA team much less be counted on as the primary backup PG. Also, losing Rondo hurts this team, and we are not better at least on paper.
Here is the lineup I see them rolling with. I hope both Payton and Jackson can develop into solid contributors as SF and PG are clearly team weaknesses.
PG: Payton/Clark/Jackson
SG: Holiday/Miller/Liggins
SF: Moore/Hill
PF: Randle/Mirotic/Diallo
C: Davis/Okafor/Ajinca
6th man: Mirotic