Why are everyone in fear that if Sightstone is buffed, other roles can "abuse" it?
I don't get it, why that would be bad? After all, sight is the key to victory
, encouraging players to buy more wards would just be very good. You are teaching them the importance of vision and how it can change the outcome of games.
I am asking that because everytime someone make a thread about buffing Sightstone, giving it more options such as "jungler item-like" upgrades, such as an AP upgrade, an AD upgrade, and a tank upgrade for Sightstone. Then everyone says that it can be abused by other roles, and that Riot should avoid trying to buff Sightstone for that reason. I don't understand why would that be bad.
Tank junglers for example, already take Sightstone for more vision control. Also, to be honest, if weren't for the wards, there would be no reason to buy Sightstone since the item itself is mediocre and gives bad stats - it is expensive for an HP item, you are better off purchasing a Giant's Belt. I bet that any possible upgrades for it would suffer from the same problem - taking out the fact that they provide wards, they would be outclassed by other items. However, wards are so good and game changing that even if the item itself is mediocre stat-wise, Sightstone is still a must buy for supports, and a fantastic pick for tank junglers.
: 
anyway
you could just aswel upgrade trinket instead

). Or an infinite stacking smite(
). Or an aoe stun+shield.(
). Or maybe infinite mobility (
).
not
If more people got
would be perma-picked