I'm opposed in principle to a dedicated trade section on these forums itself, simply because of the potential for staff to become involved in disputes ("He started it! He promised me a Super Dooper Phaser Gatling Mk XX in return for a Bug ship, but he took the ship and ran!").
What do you mean, you both trade, have to both agree to it before you can trade. Seems pretty simple. It's not like UO where stealing is allowed and you could do a last item steal. I'm not talking about making trades ON the forum, just a place to list something you want to trade with someone else.
tl/dr - the current system works fine.
That trade channel is hardly ever used. If a posted a message saying I wanted a MK XII phaser relay, someone could offer me what they want to exchange for it, instead of not even seeing what I offered in the trade channel, it would stay up here and be searchable- unlike a chat channel.