First off, Drysc let us know that one of the new ammo pouches will be changed. While its functionality will remain the same, the Knothide Quiver will no longer be tagged as a "unique" item. This will make it easier for leatherworkers to craft multiple copies of the bag for other players.
Secondly, in another thread, Drysc mentioned that the new engineering-created ammo machines will be easier to sell and purchase on the auction house. Currently they are not listed under "Projectiles", unlike all the other ammunition. This was making them difficult to find for some players and will be changed in a future patch as well.