There should be a reason to fight for buoys REPEATEDLY.
Which means, whoever get the buoy get T1: a new time limited bonus, and S1 : current static bonus.
It means, every time buoy change ownerhip, it offers T1 and S1 bonuses.
Perhaps player, or even AI could purposely attack another buoy to get T1, of course you cant defend all, so your oponent get sneaky and grab somee of yours.
This system would bring dinamics to combat.
The question is thou, what is T1 bonus ?
- battlefield repair of a ship which made most contribution to capture, like 0,5% armor and hull per second for next 20 seconds
- < space_for_yours_idea>