@axiom2213 I have played more hours of this game solo than I have with a crew. I mainly run a sloop with at most 1 other player. Up until the stress test I had only stepped on a Galleon to loot it. I was a crew member on the stress test (my posts about my stories are there if you care to read). Either way, it is a moot point about what type of ship you are on. It is about the overall experience.
This game is cinematic the way it is because it is supposed to be a story. It is not 1700s Realistic Ship battles. If you would like that you may want to go play Blackwake, I heard it is based on more realistic gameplay.
Part of the fun is launching yourself out of cannons, boarding other players ships, finding buried treasure, and destroying other crew's ships and basically choosing your own adventure.
I want you to picture this. You and I are in a battle in SoT. I destroy your ship. You die, but your ship is not yet sunk the way to the bottom of the sea and you respawn out in the middle of the water. There are sharks and a rowboat nearby. I am waiting for your loot to the surface (not merchant stuff) but your treasure chests. I am spying with my glass and I see your little rowboat. I know right where you are. I open fire with cannons and you again are put back to die. Your story is still ended at that moment.
So a mermaid with a fast travel to their ship gives them more of a fighting chance than a rowboat does. You can get back to the ship faster, be armed, set sail with cannons versus just oars or pails.
Now let's say that I see your boat as you are going to collect a chest, but it is unmanned. I now blow up your ship. You have to row back to the closest port, rebuild your boat and set out again. This takes you time. The time that you could be adventuring and having a great time. instead, you have to row your tiny boat ashore to get another that may be destroyed.
A mermaid, however, can get you right back up and sail. Instead of 15-20 minutes later like a rowboat would (no matter the speed it will still be far slower than an actual boat).
So while you make an interesting point, how about a mermaid can be summoned after 30-60 seconds of being in the water? Wait, I am not sure that would work because then someone scuttles their ship at an outpost and there is no physical sign they are there camping waiting for unsuspecting victims.
I think the system is just fine. A few tweaks here and there and it will be great. That is where I am getting at. Think about it not as a big ship small ship, but as a player wide game mechanic. is a rowboat fun for everyone? No. Is it fun for some maybe. but it does not improve the game and that is what matters most.