Sorry, but I cannot agree that more light has to impede ventilation. HR and X Yachts have no problem building boats with larger portholes than the Malo 37 and they are openable. Even Hanse and Bavaria think it is important to have good ventilation, and continue to have openable portlights.
If Malo really wants to bring down its price point, how about a teak free deck. It would not only save about $15k, or more, but also make resale easier, and keep the deck, the bottom of your feet, and the interior cooler.
I don't think it has to do with bringing the prices down, at least in boats as expensive as Malo. It has to do with bringing more light to the interior and to the inefficacy of big opening lateral portholes in what regards being water tight.
Malo have tried them with not great results:
Halberg Rassy has tried, the results are not very good, particularly after some years of use and they are still using them:
Bavaria has tried them with bad results:
And went again on the less expensive cruising line for more efficient smaller opening portholes:
But one the more expensive vision and on the top of the cruising range, on the new 56 they went for the solution that seems to mark the contemporary tendency: Lots of illumination and views and the lateral ventilation assured by some opening portholes (specially the one over the galley and the opposed one) that are only a small area of all openings, :
I bet Bavaria will use this concept on all future boats from the cruising range.
The same happens for instance with Solaris or the Xp series:
I think that those big opening portholes are a bad solution since they will have always problems in what regards being watertight, if not when the boat is new, quite rapidly. You can have boats with traditional smaller portholes or boats with lots of light and outside views... but not both.
You have an intermediate solution, one that possibilities the views and the lateral ventilation one that provides lateral opening portholes but only on a small area of all the area that provides views and illumination.
I had boats with the two solutions and I prefer the last one. A boat needs on the saloon lateral ventilation, specially over the galley but most ventilation comes from the big deck hatches.