Sight stone buff
What if sightstone scaled in some way when you finished your ruby sight stone and your support item. For example: getting ruby sight stone and frost queen's claim gave sight stone 40 bonus AP and 50% base mana regen or when you got targon's embrace and ruby sight stone you were given 200 bonus HP and 35 tenacity. What this could do is buff supports and make sight stone more slot efficient without it being a mainstay on 3+ members of your team at a time. Supports at the moment suffer to a degree because sight stone, despite being gold efficient, is not slot efficient (400 hp late game.... really...) and on top of that, support items are the same way, gold efficient but not slot efficient. Supports tend to be pretty weak stat wise through the entire game so they can't really do damage or tank unless they are incredibly ahead and instead have to rely on skill and cc to do what they can. This would just be a nice change to allow supports to front line and actually have some carry potential from raw power.