2. Show a history of your closed trades and have an option to reopen/edit them in case you restock. That way trade links will never expire when you run out of stock, you simply reopen it.
This is a big one for me, and I'm sure others too. Right now, it is quite a hassle to re-create a trade that has run out of stock, especially if you have a full and complex wishlist for it. I would like to suggest 2 ways of doing this:
1) Automatic: Shop owner sets _individual trades_ to automatic refill. Any time these trades run low or out of stock, they are automatically refilled from the inventory, and reopened if they have been closed.
2) Manual: A refill button is placed on each trade. The shop owner can then click the refill button on individual trades that he wants to refill from the inventory. In the case of closed trades, the shop owner would need to view their trade history, click the refill button, and then the trade is reopened.
I would also like to request a redesign of the sell/buy search bar so that it is more obvious how to search for 'buy trades'. The easiest way would be to add the 'buy' button right next to the sell button, highlight the 'sell' by default, and grey out the inactive button.
I'm having a surprisingly difficult time selling TF2 items here and I'm trying to think of ways to improve the situation and I think changing the search button design may help a bit. I can't say for sure, but I know when I first used the site, it wasn't obvious to me how to switch it to search for 'buy trades'.