I can't say I disagree with any of those. (Well, I could, but I'd be lying).
I think a reconfiguration of the amounts of training given for certain regimens would likely be in order as well. I think for example that 1v1 adds significantly more skill to twice as many players as single position outside shooting is in some way responsible for the distinct inside flavor of the ecosystem, especially since 1v1 for forwards also boosts IS. Just about everything boosts handling, while only outside shooting and jump shot affect JR. The OD/ID crossover is nice, but an OD/SB crossover option instead would be nice.
I'd have to put more thought into that to propose actual amounts for change, but it's certainly something I'd endorse discussion of and action on, even if I don't know that it's something likely to make it into the pipeline anytime soon. It may be easier than an actual significant adjustment to the game engine, though.