I would love to eventually see a larger crew choice. Specifically up to 8. There are 8 canons on the Galleon and my friends and I would love to play with more people. It would make handling the ship a bit easier and more fun to play with more friends and a larger crew. But if not 8 at least 6 would be nice, just more crew in general.
Also more customization options for your pirates physical features. Piercings would be a cool addition or getting to choose weight, height, skin tone, teeth (maybe a gold tooth) and appearance in more detail. I spent about 40 minutes shuffling through the pirates just to choose one I found semi decent. I personally just enjoy in depth customization for a character you’ll be playing long term. It makes it more unique and accustomed to you. More hairstyles would also be nice and making the female pirates look and sound more feminine. Right now the female pirates sound like men when fighting and even kind of look like men which is a bit disappointing. Also customizable scars, jewelry, etc. would be nice considering pirates like treasure and steal jewelry for themselves.