Having shot for many years under USPSA/IPSC rules, and watching USPSA change from one, to two, to now, what, 7 divisions (?) with 6 classifications in each, and 7 or 8 special categories, with major and minor PF scoring integrated as part of the scoring system, I gotta say that in my opinion, going down that road would be severely lame. One of the biggest negatives to USPSA is the fact that the scoring system - while totally understandable in the grand scheme of things - can't easily be followed by anyone that's not running around with a spreadsheet, and sometimes no one can tell who's truly winning until the whole thing is done. Honestly, it's kind of ridiculous.
Some things make sense. Lowering the price point to play (a production style division) is super effective for a number of reasons, for instance. Keep the scoring system SIMPLE. Stick with as few divisions, classifications, and categories as humanly possible and resist the urge to grow things for any purpose resembling "inclusivity" or "fairness" (because that's how you get participation trophies).
Power factor immediately complicates scoring, and you suddenly need a computer to keep track of things, and you need to chronograph all the competitors and weigh their bullets to determine what power factor they're at (whether you're measuring energy or momentum, you still need velocity and bullet weight). All you actually gain is an artificial sense of levelling the playing field against lower recoiling calibers by arbitrarily saying that some score differently than others. And then you need to set up matches so that you can realize power factor scoring, which means.... what, paper targets? You're kidding, right?
Matches that run a tactical division are free to specify what calibers can be shot in that division. You want to keep out .224 Valkyrie from that division, great, say it's 7.62x51/.308 Winchester and 5.56x45/.223 Remington only. Whatever. PRS's Tactical divisions already do this. You want to make sure that Production division remains in the spirit of Production (and not have someone, say, build 6mm Dasher Production guns), great, say that Production division guns can only be chambered in "off the shelf" calibers, and define what those are clearly. If you're in Open, boo-fucking-hoo. Run what you brought, or rechamber it to what you want. You're in Open, so wear your big girl panties.
Fix the problem via match design. Want to penalize lighter, slower calibers at your match? Great. Run heavy steel at 1k or beyond, where ballistics for those calibers get dodgy. Want to favor lighter, lower recoiling calibers? Great. Run shorter ranges matches that require very unstable positions on every stage, and use target flashers or the like.
Doesn't matter what you do. The best shooters will always win, regardless of how you set the rules.