Hello Rare,
i like your game a lot, but Arena is something that cannot catch me until. I tried sometimes and it's either you have no full crew and others just dont work together or you have a full crew and its barely a challenge because you are organized and the rest is not and got steamrolled by your crew.
I had one good Arena fight that was fun and challenging and we lost for a few points only, but this leads me to my suggestion.
Make it one island with one chests worth 10k gold or more and only 2 rival ships who are equally far away from the island with the treasure.
And give us 1vs1 Sloop, 2vs2 Sloop, 3vs3 Brig and 4vs4 Galleone.
It's the challenging tense fights who are fun.
That would be an Arena mode i'd like to play.
Who is first at the island, who will make it to dig up the chest first, and are they able to deliver it???
What we have now is frustrating or not challeinging at all, becuse it's chaotic and unfocussed and therefore just not fun.
Or dont do it and i'm also fine, but not playing Arena :)
edit: Maybe 3 ships would be fun aswell, because of some uncertainty who to fight first or at all etc.
But more Ships and treasures and it all becomes too chaotic, less focussed and just a "rush and avoid fights at best" mode.
TBH i dont like it this way.