Production is dead as far as I see it. At my locals hardly anyone shoots it. It's gone the way of single stack. Going to 15 round mags would revive it I think.
Carry optics is such a dominant division it could be split in half and still be the top two divisions in the sport. If I were king for a day I'd do a production optics and limited optics. Both minor divisions but one allows for SA guns and magwells and production optics is more like IPSC rules with trigger pull weight rules to prevent 2 lb striker guns.
Limited and Open can stay the same although I think they should seriously reconsider the major PF limit. Imagine if it was something more like +p ammo. 9 major now is outside SAMI specs and it's no wonder there are very few ammo manufacturers that make it. If they bumped it down to +p you could run an off the shelf gun and not have to buy extinct .40 cal ammo or make dangerous 9 major.