I would like to request that the item search in the market wards be populated with all sell-able items names, levels and statistics even if no such items are present within the market ward. This would reduce confusion for new players like myself by letting us see what items we should be looking for (to craft, to have crafted for us, to sell, to buy).

The functionality appears to be partially present, as the market wards do populate with such items as are available within the wards. Including a non-interactive invisible retainer (or retainers) with every item in inventory should be doable if there isn't a clean way to add "show unavailable" to the market ward search.