Additional upgrades to make Sightstone more exciting.

So, I was considering how boring Sight stone is as an item, creating situations where supports don't want to buy it and teammates get mad because supports don't have it.

What if Sightstone was changed to something like:

Ruby Sightstone: 500HP, 4 charges. Volcanic Vision: First charge lays down a fire ward, giving first first ally to touch the ward a burning effect to their basic attacks for 4 seconds. After being consumed, this ward becomes a normal control ward. The rest of the charges are normal wards.

Emerald Sightstone: 300HP, Hp Regen, Mountain Vision: First charge lays down an earthen ward. It creates a small field that shields the first teammate that walks though it after a short setup time. After the heal is consumed, it becomes a normal control ward. This ward is visible and can be killed. Remaining 3 charges are normal wards.

Sapphire Sightstone: 200HP, 300 Mana, mana regen, Ocean Vision: First charge lays down an ocean ward. This ward creates a small regeneration field that restores ---- mana and HP over 6 seconds to teammates that remain in the field. Once triggered, this ward becomes a normal control ward. Remaining 3 charges are normal wards.

The idea is predicting and setting up or forcing fights in certain objectives could have a layer of strategy. You could create choke points where you have the advantage for your team because you planned ahead. The setup time for the effect will keep them from being plopped down right in the middle of team fights, because they are likely to be destroyed and won't activate fast enough.

What do you guys think?