You're not losing DJJ. You're adding his stats to the rotation players. And I would argue that DJJ would still be playing with either Doncic or Kyrie as the lead guard.
Plus Pascal averages 3 assists per game. DJJ averages 1. So you're averaging more ball movement, more assists per game, more points per game, and more rebounds per game. Plus you're helping the rotation's defense by playing DJJ there. And I'm not at all sure we automatically say DJJ is a better defensive player (although I think it might be true on the margin). You also have a young, veteran player in his prime who has seen a championship.
Plus Pascal averages 3 assists per game. DJJ averages 1. So you're averaging more ball movement, more assists per game, more points per game, and more rebounds per game. Plus you're helping the rotation's defense by playing DJJ there. And I'm not at all sure we automatically say DJJ is a better defensive player (although I think it might be true on the margin). You also have a young, veteran player in his prime who has seen a championship.