This would just make combat significantly worse than it already is in SoT.
Making planks irrelevant and server participation unnecessary by flooding the docks with supplies and the game with easy to acquire chainshots has benefited nobody except server hoppers and people that take no risks and don't challenge themselves at all.
People often forget that this is a risk/reward game because combat so often hasn't been maintained that way, but it still is in design.
The reason that this game is full of people that start off ultra aggressive and run/reset after 3 cannonballs, then aggressive again, then run/reset again, etc, with no treasure is because that is what has long been enabled. Aggressive server hoppers that have been on a server for 5 minutes that never have to worry about supplies that can just spam boarders and run/reset all day.
Supplies should have always been on the lower side unless someone heavily participated in content on a server. Supplies should be reward, not entitlement. Chainshots should have been like wraithballs. Planks should have never been made irrelevant through mass quantity.
Most meta problems with combat have been entirely self created because they were/are catering to people that want to circumvent the risk part of the game and only be handed the reward part.
Hg should have always had its own supply situation that was exclusive to playing HG and based on creating "fair" fights. Those are matches that are meant to be competitive yet are treated like some rando imbalanced adventure fights. Every competitive design outside of HG had people taking supply fairness seriously, even ones Rare were involved with. Only Hg has had the supply imbalance that it does, and it's worsened the environment around it because of it.