OP: I think that you are totally off-base with your assessment of Bargs and his ability to lead this team. It is TOTALLY unreasonable to look at his production when Bosh was out and say he didn't step up.
Last year, Bosh was the man. Obviously. And his sets would reflect that. The positioning of players were designed to keep as many defenders away as possible and to create passing lanes out when the doubles came.
Bargs was expected to spend most of his minutes with Bosh, so what few sets he actually had run for him ASSUMED Bosh would be on the floor. Which also basically guarenteed no doubling from the PF stop, among other things.
With Bosh temporarily out last year, the Raps couldn't suddenly just start adding new plays, it just doesn't work that way. You just run lesser run plays, more often. And at a disadvantage.
This year, while the coaching will still be subpar, Bargs will have more plays at his disposal, and they will NOT assume that he is playing with an All-Star. His and his teammates' positioning will change to compensate. And those changes will give him the time/spacing to be more effective.
If anything, Bargs will have an easier time than Bosh in being the main offensive threat because of his much greater versatility.