How to tone down Vantage & S14's sniper meta?

Vantage already sucks and you want to make her worse just because you struggle to close a gap? Every type of gameplay style has a right to shine even if you disagree with it. Just because it's not your gameplay style doesn't mean it needs an instant nerf. If anything, her ultimate should be second to the kraber, and her amped damage should be removed seeing as it's practically useless as it is. Just because pros hit every shot in ranked doesn't mean everybody does, and the whole gaming community shouldn't have to suffer just because pros break games. 

Also, whenever a new legend is born, it is inevitable that more people will try that new legend. This doesn't mean the whole meta has changed just because of a momentary increase in character usage. This means that over time you will see that less people will use vantage, so I wouldn't worry about it too much. It is only temporary. Chill out.