I'm not sure if this has been said already, but I think that the "Trade Offer Accepted" notification/message should include the trade details, like what you gave the other person and what you recieved in return. This would be really helpful to me, and I'm sure, many others.

Example Message:

----------------------------------------------------------------------
I have accepted your trade offer!

You have received:
(list of items/SB/GB and/or links to lions received)

In exchange for:
(list of items/SB/SB and/or links to lions given)
----------------------------------------------------------------------

Or something similar. :3