As a support player i HATE to play against stealth

Mainly against eve, but it applies to other stealth champions as well. With the current ward system (which is better then the old one in a lot of ways) stealth just has little to no counter play. Now before you all yell at me that pinks exist, I'm well aware. My problem with the current pinks is that for the lane phase they just ask to be killed. Let me give you a clear example:

For this example, lets assume the enemy has an eve jungle and both bot lanes are evenly matched. Now if i have river bush or tri-bush pinked against the eve (like the game thinks i should) i will see eve come (if she comes through that spot only). As a result we back off when eve shows up. They kill the pink and vision is lost (100 gold value). Now this is where i have a big beef, we now have no idea if eve is still in that bush or anywhere else. We basically have to play assuming that she is still in the bush until she appears somewhere else which often is like 2 or 3 mins away. You cant really reward like you can if someone sweeps a normal ward, because if they are still there you are down another pink and 100 more gold.

With the system the way it is now, i don't even feel like i should buy wards as a support (in lane i mean, still need them for mid-late game) the amount of counter play feels terrible.

My suggested solution: A ward that is invisible like greens, that doesn't revel fog of war, but does revel stealth in the area (think about how units look in rengo ult, basically that). Cost of 75 like greens. This ward does not reveal other wards just traps (teemo shrooms) and champions. I think this would be a good solution to the problem.