That would be excellent! Doubt they'd do it though because it seems as though they don't want to make things easier for us, they'd rather we buy diamonds.
I've thought about sending a group message every time I put something up for trade but I'll have to run it by my Fellowships first.
I`m not sure how your chat works, (as I`ve seen several people that seem to have great probs. with their FS Chat), but yeah, all a part of what Chat is for. Mail can do the same, tho`, Chat is a little more immediate, current, pertinent and potentially less wasteful..
(Mail, someone could have been offline for some time, the items listed for Trade may well not be there and gone a long time beforehand).
Mail could involve a lot of unnecessary mails, clogging up yours & other peoples cache, (& poss.slowing game`s down),