I think that you would only see minimal difference, if any, to what you now have. I agree with
@microkid that most factory standard wheels are not well built as they are bog standard and we aren't, we are all different and ride differently. Mass produced wheels meet the lowest common denominator. Also the wheels are what most manufacturers can cut corners on price wise and they do. Yes an upgrade is usually beneficial, bringing your wheels up to the standard of the rest of your bike. I'd try to find a local wheel builder, tell him what you want, that is how you ride how much you weigh and he how much you are willing to spend and he should be able to make you a lovely stiff pair that will last you a long, long time. When Drew built my good wheels,
https://ridefullgas.com/revolution-...ng-deep-gloss-29mm-wide-58mm-deep-1565g-pair/
He built them specifically for me, for my weight for my aggressive out of the saddle climbing style. My wheels which are made with the same materials as my friend's are a completely different set of wheels. Mine are for me, his are for him.
All this said I still think mavic make the best mass produced wheels. My current work bike is nearly 30 years old and the mavic wheels have never given me any trouble in those 30 years and still run true and free. I have a, pair of kysirium elite s on my second road bike, they perform really well though don't have the pick up my good wheels have nor the ability to roll without losing momentum. They are I think are the best medium range wheels of you don't go for a custom build. Hope this helps,perhaps direct message me if you want to converse more, I'll happily give you the benefit of my experience.