Lens + Oracle Need Fixes
Both the Lens and Oracle upgrade for the trinkets should grant vision on stealth units and remove vision impairments
Here is why
Vision on stealth units:
Currently at max builds there is no more room to place pink wards unless someone opts out of a 6th piece of gear. This seriously can hurt some champions. Anyone can argue that Supports should always have 1 on hand, but thats not exactly rational thinking.
A carry, tank, or jungler can get engaged on my stealth units or units with "mobile stealth" like vayne, and without a pink on hand, they can do little to counter the fight.
Vayne is the main reason this is an issue because once you reach and pass mid game, her ability to pop in and out of vision is a huge problem. When a tank with 400+ armor, and 3500+ hp can get shreded by a champion who is also capable of being impossible to even target due to their mechanics, it becomes a really terrible setup.
Vision impairments:
When oracles is activated it should have a similar effect as banshees veil does with nocturnes ult. If you have banshees whether the bubble is up or not, you no longer lose vision of your screen when nocturne ults, you also arent revealed by TF's ult if you have banshees up. Oracles should have this same effect while its activated, but not be limited to TF and nocturnes ults. It should also remove the blind from quinns Q, and the loss of vision from graves W. Rengars ult should also not be able to reveal a player who uses an oracles.
This would make the choice of a trinket alot more dynamic. You have the choice of granting more map control via vision, or have better control through proper use of a trinket.
Obviously the trinket / oracle would need their duration of cooldown extended a bit, but i feel these ideas are something this game needs because currently dealing with some of the mechanics are just not fun for the majority of players.