Interjection:
I actually really like your pshat.
I just want to add that the pshat that you heard also makes sense to me. I’ve heard that in Olam HaBah women will have a great advantage over men in being able to be mekabel the light of Hashem as they are already mekubalos, while men are nosnim. The bracha of she’asani kirtzonoh seem to be to be addressing a woman’s innate ability to mekabel from Hashem whatever He wants for her.
in other words both advantages are being addressed with these two brachos. Man’s advantage of having more mitzvos and by extension more schar. And woman’s advantage of being able to more effectively receive schar. I picture the difference of 10 gallons through a shower head vs. 5 gallons though an open pipe (except that schar is infinite)