This is almost coming to the point of the "bench scoring" issues, people are looking at numbers and working their way back to a problem that really isn't there. Is a bench of scorers good to have? Depends on the team you have. Apparently a good chunk of the bottom 5 in bench scoring are doing OK considering teams like the Celtics and Knicks are right there with Sacramento. The Kings are 6th in apg since Christie took over and that was with another non true PG in Fox who was just running pick and roll and looking to spray. The Kings run pick and roll and DHO, they're doing just fine. If they dip it shouldn't be by much.
As for the PG duties on the team. The Kings are still mostly looking to "spray". If you can get around the defender and break into the interior that's essentially what they are asking for the "PG" to do. Right now Carter is having a hard time figuring out how to generate contact, get calls, and finish with a big man usually right there in the paint with him. Getting around his man? That's already there. The first step is something you can't teach, the rest? It should come with court time and probably in the summer when the strategically gameplan for his role in the offense which right now he doesn't really have one unless he's handling the rock. He is however consistently getting into the basket area and creating swing action from there. Keegan is starting to do more of that as well. The Kings picked up LaVine, a player not to the exact level of Fox in pnr, but he isn't too far behind. He really isn't.
If Christie can't trust Lyles and Len though, that's a different story. The Kings need a big man for sure.