I'd like to suggest:
Speed-Meta: Remove most of the speed-knowledge buffs, speed upgrades and what not. Getting a Wasa or Bellona in battle to 14,5 is anything but realistic. And it can not be because it promotes gameplay because it doesn't - it ruins the ship balances and in the end everyone is going for the same ship. In short - either do something seriously about the speed issue or remove all the other ships so we can get paints for the Wasa..
Remove the reinforcementzones. Make the PvP server a PvP server. I trade a lot, I craft a lot and I do PvP when the chance is there. I don't get tagged in a trader unless I'm the one who wasn't paying attention and this is how it should be in a PvP server. Alternatively make Britain the PvE nation (wouldn't be much of a change) and all others PvP nations - And britain should ofc be excluded from the RvR so as not to give one nation an unfair advantage in the RvR competition.
Safezones: Remove the capital areas as the forts/towers make excellent protection for traders and anybody else.
Ship balance: REBALANCE ALL SHIPS!