I like dorades and not only consider them "salty" but also "yachty" and stylish (some are very smart or handsome and even colorful or bright). I like the bright chrome ones with painted interiors (red or blue), but the bronze ones with patina look great too.
I have also seen ineffective ones and very effective ones. In my view, bigger is better. More air flow is better.
I prefer larger traditional dorades with larger cowls for more air flow. As many dorades as possible and preferably one for each stateroom.
I also see the practicality of using them (open with air flow) in stormy weather, when the other ports
are closed. A closed up boat can get oppressively hot in a very short time if there is no air circulation. I rode
out a gale at sea with the hatches and ports
closed and the boat felt like a very hot and humid oven
. Even during the gale, with high winds and stinging rain and spray, it felt better to be outside where one could breathe. I wished that boat had traditional dorades, but it did not.
So, I would have traditional dorades on my boat, with screens for bugs, and a cap for inside for use only if there is green water
coming through the dorade, something that should not happen if they are properly designed.
That is what I would do.