There are always going to be glitches, bugs, unforeseen user actions. You can only test things so much, through a couple million people at any software on earth and your gonna find the cracks. That's why some if the more important places in the world get hacked, even banks get hacked, being hacked is only possible do to the programmers and testers not seeing the issue that allows the hackers to "get the cheese." As for trading system, like someone said before, borderlands trade system lead to god mode stats on duplicated and dropped/traded items. Even if that doesn't happen, people will be able to go on line and buy some sweat shop kids weapons from china. In fact they'll be able to buy this fully upgraded. That will break this game by give the very best thing for any given situation to everyone with the cash to buy it. Then what was the point if it all? You can say they could limit trades to friends or so many a say or whatever, but that just means you got to friend the sweat shop kid fir day or wait couple days for your bought nit earned booty.