I did a search on test server just to be sure this hasn't been proposed yet and did not see it, so here we go...
It seems like a lot of damage formulas are out of tune and are causing a lot of grief among the player base. Is there any chance of a test server that we could get in which we can freely copy our characters over with their full kafra inventories, at any time, so that we may test patches before they hit the main server and give our opinions on skills that are potential game changers? Sakray was much like this when it was first implemented, major guilds would make characters there to test and give feedback on patches that have not hit Chaos or Loki yet and this would allow for better game balancing. Internal testing doesn't seem to be enough because with every patch a new exploit or flavor of the month class comes out with nothing to counter it due to poor testing done.