When I first started reading comics, Jan led the Avengers. The Wasp was the Shit. She sent Namor the fricking Submariner to his room... Okay maybe that didn't happen, but wouldn't it have been cool if it did? (Something like that probably happened.)
I have nothing against a mature Wasp in her 30s, if I get a movie where she's a flirty fashion ditz first.
Overcoming what Pym did, made that Woman. She stopped playing the fool, knuckled down and became the perfect example of the top of her field... A genius, billionaire, super hero, industrialist, philanthropist.