Aside from the people who don't seem to know how the wards work or just don't care, this is the only real problem I have with the current selling system. Let's look at all the crafting jobs to see what they make. my CRP friend makes shields/swords/canes/bows/polearms(weapon ward) but as well they can make sandals(feet ward, don't remember what it's called), as well separate wards for masks, as well as gathering tools. ARM needs wards for helmets, body armor, shields, footwear, and gloves. Being able to sell in just one ward at a time just isn't efficient unless you make all one type of item to sell.
As much as I want this ward system to work out, I just don't see any way they can change it to make it work without us having to buy extra retainers(and that isn't even an option at the moment). But then again, maybe that was the point, to make us pay extra to make this sytem work.
Truly, I would love to not offend people by having some of the wrong items in a ward. I'm a Carpenter, Alchemist, Weaver and Cook. It's just not feasible at the moment to NOT have items in the wrong ward, no matter what the majority of items I'm selling are. I'm not the type to throw away something I can use so yes, I have Bows and Canes when I'm trying to sell weapon parts and food too.
The only thing I can say for myself is I put my vendor in the ward that matches what I'm selling the most of at that time. Some days its the Battle ward, some days it's Spellcraft and other days it's Tinkerer etc.
I agree that many people are lazy but a lot of us, we don't just stick to one item or craft and we only currently have one (two if you count yourself) spots to sell our items at.