Who says that the trade system will be a simple trade screen, period?
Why didnt you just type a real . and not write period? lol.... this is really typing not like you are talking to someone in person and cant simply show the end of a sentice with a . haha all good just felt like trolling that a little.
Anyway.. Id say there will be a simple trade system.. they said something about you can trade the item to a teamate or simply throw it on the ground and they then will see it.