Aft head - isn't every boat a compromise?
There are plusses and minuses to all of these - I agree that an aft head has some plusses, including a shorter trip through the boat, and that some of them allow you to sit pointing forward. This can be less difficult than facing the center of the vessel, particularly if you're trying to use the head while the boat is heeled significantly.
My girlfriend was using the forward head on a friend's Beneteau 50', and when they hit some very big commercial shipping wake - well, let's just say she'd rather not use a forward head in a vessel underway again.
On my boat the head is almost exactly amidships, and you are seated toward the centerline of the boat, rather than pointing forward or aft which would be my preference, but there are advantages to the head's location here, as there are two doors to access it - from the private aft berth and from the cabin. I'd lose a private double berth aft if the head were located there. I think it comes down to the configuration of the vessel and finding an overall layout that you can comfortably live with.
I don't worry too much about an open hatch that's near the cockpit even on a boat with the head by the companionway (which mine isn't). Most people figure out to shut the hatch while they are using the head, and reopen it to ventilate the head afterward.
One more note:
"Coming from my own perspective; In a lifetime of boating, I've never had to strip off wet foulies. I don't even own foulies"
While this may hold true for some, in the Pacific Northwest, for instance, we use our foulies quite a bit at various times of the year, and the less distance you cover while drip-drying, the drier the boat's interior when you do drop the hook for the evening