This is like saying do we need anything more than a Bristol Freighter because we could all find out who the best flyer was.
The only arguent for an H16 is that there are so many.
This question is about the best possible world of cat sailing so why do we want an outdated, heavy, expensive sea plow?
I might remind you that in the best possible cat world all cats are cheap.
F18 are also out because they are tooooo heavy. Lighten the weight rule for them and sure.