As Danik says; It encourages teamwork but for those Pirates that prefer single work and are in it, for themselves like I. Seeking fame and glory across the boards - The ability to only have 600 turns would somewhat limit the ability. This is a kick, it is not the end of the world - For I am pretty sure Self Sacrifice, Death poker would give you turns, am I right?
I would much prefer though, the max limit to be 1,000 Turns - For in a single raid, you need 800 turns on your own. That is store the ships in the Private Mariner as well 600 is possible, but if anything messes up - It will be a huge waste to Pirates. I guess this is to stop players stockpiling 1000's of turns encase they get lit up - We all know one player by now who gives a great example of this.
Reason 1) Single player Pirates will not be able to run mass raids - Only to attack Merchant fleets, which is something but of course, a Ship of the Line fleet is a major to Pirates.
Reason 2) If one wants to achieve something " Incredible " lets say 500 attacks in a day, this would make it impossible. Putting a limit on what Pirates can do when it comes to plunder is something that should not happen - For in real life, they could go out and pillage the plunder all they want.
Reason 3) It has been fine for a long time, why change it now? Why the sudden desire to change 'what is?'.
I do not like the way this game is going - Even with the max limit of 1,000 turns this means a player would only be able to steal one major fleet at a time. It would be 250 attacks on a few merchants, granted but it is still not as much 500.