Warding Solution
Yea of course some of this has been thought of before, but this just my idea for it changed up a bit.
-players have a green and pink ward slot
-wards cannot be placed into item slots anymore
-no limit on carry-able amount of either ward
-each player can only have a max of (2 or 3) greens and 2 pinks on the map at a time, replacing the oldest placed respective ward if the full amount is already on the field. Functions pretty much the same as a sight stone.(numbers could be changed slightly)
-(ruby)sight stone remains in the game -functions the same, but allows a player to place 3 extra green wards that function outside of the ward slots.
-sight stone and ruby sight stone grant (3 or 4)g/10. Sight stone would now build out of a sapphire crystal and give 200 mana, and ruby sight stone would still have the same recipe and cost and give some in the range of 180-200 health.
ex item build path: sapphire crystal-->sight stone+ruby crystal-->ruby sightstone
This would encourage other team mates to purchase at least 1 ward if they want more vision while also not having to worry about their item slots being taken up. Leaving sight stone in the game and having it function how I stated allows for supports to still do the majority of the warding, but at less strenuous costs. It's new build also removes the potential of it becoming a new heart of gold.