I was thinking about supports with Sightstone. Its such a great item. But its obvious limitation is only being able to have 2-3 wards available on the map at one time. When I buy this item I buy wards too as I prefer always having 5 wards at least, every time I shop as a support, but as the game progresses, all the item slots are used, theres no room for more wards, so I thought a good idea would be to add a ward slot onto the Ruby Sightstone, which can take an additional 2 or so more wards for normal 75 gold cost.
Either add a feature which you pay say 200 gold to upgrade to be able to buy more wards for the slot or just make it so that when you buy wards they automatically get stored in the Sightstone, and you can place 4, 5 or 6 wards all over the map without them disappearing on when the limit is reached