I really believe this PvP game mode could work in Pirates Online because the game already has objects or forts that make it still pirate-like related.
A list:
1) The Navy and EITC forts as our bases
2) Flags. Navy and EITC and ships all have flags in the game. So our game mode would still be related using "flag" objects.
3) Power-up tokens on the field, randomly generated upon time elapsed or upon resurrection. This still would make it pirate-related because it could have abilities like the potions do or special temporary buffs like el patron's ghost ability.
4) Cannons. Not sure if that would be a good idea or not........ but it would give the teams a choice:
Travel to the other fort by running on the path or staying at your base using the cannons to damage your rival's team members/fort.
I think this would just take too long to program, but one can dream
But, it can be implemented. It's not like something out of this world like Pirates Online getting an update where they visit ice lands and its snowing the whole time. The Caribbean has no islands that would have snow weather.
That is an example of an update that would for sure not get added to the game.
(
Note: I was half awake while typing the message above. Please excuse the errors... if any)