Maybe Riot could add a Shroudstone? Gives mana instead of health and gives the user a certain number of scans in the field that refresh on recall instead of wards?
Right now, supports are basically forced to get Sightstone, at which point they are expected to swap out for Sweeping Lens. There is no decision making and champions are being forced to buy items accordingly. Riot has stated before that they didn't want to make it so that a champ needed to get a specific item in their kit in order to operate. This item would allow supports the choice to upgrade their trinket to have the recharging wards while not compromising their ability to remove enemy vision as well.
While it is everyone's role to ward, supports tend to have the most vision control through both always having wards to drop and having a Sweeping Lens post-laning phase. This idea would reduce a support's ability to drop 3 wards on a moment's notice in exchange for the ability to sweep multiple key areas on a moment's notice.
I mean, I wouldn't buy it, but I trust this forum to honestly and critically tell me exactly why this idea is bad.