Just remove Sightstone and finish reworking the rest of vision into Trinkets.
Sightstone is so boring and obnoxious. Supports already don't get shit for gold, and they have to spend a huge chunk of their income on a shitty item that is only used for dispensing wards. It honestly doesn't feel much different from season 2. The new sightstone upgrades are just trying to patch together an outdated system. Do away with the sightstone, let supports have actual build diversity and allow them to buy items they actually want that are actually fun, and finish doing what you have been doing for 3 years and rework the entire rest of the old remaining vision system into the Totems.