It would be awesome if we could be able to put up an buy item auction in AH for an item we want at a price we want.
We would have 3 tabs in AH, Buy, Sell, Your auctions.
In the Buy tab, you're able to say you want to buy Swordfish for 490gp each, and put the quantity in, and it takes the GP from your inventory for said items. The person who wants to sell at that price, can have the swordfish on them and do the transaction, thus taking the swordfish from his/her inventory and receiving the GP.
This would make it easier to see what kind of items are in demand.
Edit -
This can also help with new players as well.. Say someone wants to level up crafting but no one is selling cow hide for them to do so.. They can put up in AH that they are buying 10,000 cow hide at idk 50gp each or something.. a new player can see that and be like "hey I can go kill cows and get him cow hide and get money".
I think it would be a good thing.