when it was said premium account wouldn't affect game play was aiming to the fact there wont be any extra exp, drop, spoil and so on, and it still going to be that way. its true that having a box on your back you will get double money for you main but u will also not get full exp on your main, so its up to the players to decide what choice fits them better. At same time if u leave the 2box allowed freely, most likely ppl that like to play classes like SE, pp, or even bards as a main class will have a harder time finding the party they want or need becus there will be always someone who will bring his buffer box, or even for duos people will just take their buffer box. Since the time we joined in and the talks about premium or dual box came out, the answer was always the same. it wont give any extra stuff except 2 box, and you will be able to 2box only with premium account. and actually there's a post from draqla on march 25th saying and i quote "A premium account will offer you the possibility to make dual box". dont see where's the doubt about it.