A Solution to the Problem of Stealth Ganks

EDIT - added a tl;dr. EDIT - I also linked to this on r/leagueoflegends, you can see the reddit discussion here. EDIT - Provided a comparison for the size of the area.

Everybody just loves dealing with stealth junglers, with the usual options tending to be "never push lane", "protect your pink", or "have a bad time". But sometimes such measures simply aren't feasible or acceptable. Whether it's that your lane matchup puts you at a distinct disadvantage when you can't push, that there are too many possible entrances demanding a pink ward (i.e. blue side bot lane and purple top lane), or that the current reality of your lane ensures that you cannot protect your pink ward, failure to adhere to the standard procedure tends to reward you with the sudden loss of your flash or your life.

So how do we ensure that there's a way to protect ourselves when the usual safeguards just won't cut it? Simple, we provide a way for perceptive players to catch wind of the fact that someone's skulking about in their area, and we do it by using our usual tool for preventing ganks.

What we do is implement a system that functions similar to the existing mechanic for detecting a nearby stealthed Rengar, but far more limited. We give stealth wards a small area around themselves (radius of maybe 350 units or so (the size of a Lux E) ) where a hidden champion will prompt an exclamation mark (and nothing more) to appear above the ward. No more Eve sitting undetected in that lane brush you can't possibly keep pinked, no more Twitch casually stealthing in without a care for any standard wards that might give him away, no more bullshit in cases where you simply don't have the privilege to detect your incoming demise.

But hey, doesn't this detract from the value of pink wards? Answer: Not really. Pink wards are still by far the most effective way of detecting and seeing stealthed champions (superior range, far easier to notice detected champions, exact knowledge of the stealthed champion's location, and vision of the stealthed champion on the minimap so that your mates can potentially warn you if you didn't happen to notice yourself). The new functionality of your trusty friend the stealth ward only gives you that heads up if you happen to notice the brief, easily overlooked warning it gives you, and can still be circumvented by any gankers preferred safety buddy, proper communication of ward locations. All this change does is provide a limited measure of safety to the perceptive few with no other choice.

So what are people's opinions of this addition? See any obvious flaws or unfair treatment of stealth champions now having a reason to consider intelligent gank vectors? Feel free to drop any tweaks or suggestions that come to mind, or to correct me on why the current stealth gank situation is actually in a healthy state.

TL;DR - Add a feature where stealthed champs walking close to enemy wards display an exclamation mark above it for the enemy team to see.

Cheers.