It'd be nice if there is a feature which allows the drawer to be locked so that no items inside the drawer will be feature in the trade. It's such a pain, especially for those who have hundreds of item, to choose items to trade then rearranging it again. :S

this has been suggested before. I don't know what will happen to the suggestion, but one easy way I've found is to drag the item to be traded to the front of the main invo so it is easy to find.

This feature wouldn't be hard to add in, so hopefully if there is enough support, it'll be done.